CVE の説明

Cross-site scripting caused by the editor instance destroying process in ckeditor5

CKEditor 5 is a JavaScript rich text editor. A cross-site scripting vulnerability has been discovered affecting three optional CKEditor 5's packages in versions prior to 35.0.1. The vulnerability allowed to trigger a JavaScript code after fulfilling special conditions. The affected packages are `@ckeditor/ckeditor5-markdown-gfm`, `@ckeditor/ckeditor5-html-support`, and `@ckeditor/ckeditor5-html-embed`. The specific conditions are 1) Using one of the affected packages. In case of `ckeditor5-html-support` and `ckeditor5-html-embed`, additionally, it was required to use a configuration that allows unsafe markup inside the editor. 2) Destroying the editor instance and 3) Initializing the editor on an element and using an element other than `

` as a base. The root cause of the issue was a mechanism responsible for updating the source element with the markup coming from the CKEditor 5 data pipeline after destroying the editor. This vulnerability might affect a small percent of integrators that depend on dynamic editor initialization/destroy and use Markdown, General HTML Support or HTML embed features. The problem has been recognized and patched. The fix is available in version 35.0.1. There are no known workarounds for this issue.                            </div>
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                                    <h2>CVE の情報</h2>
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                                            <h2 class="tw-h3">関連する弱点</h2>

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                        <th><nobr>CWE-ID</nobr></th>
                        <th>弱点名</th>
                        <th>出典</th>
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                                    <td><nobr><a href="/ja/cwe/cwe-79.html">CWE-79</a></nobr></td>
                                    <td><b>Improper Neutralization of Input During Web Page Generation</b><br>The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.</td>
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<h3>メトリクス</h3>

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                        <th>メトリクス</th>
                        <th>スコア</th>
                        <th>深刻度</th>
                        <th>CVSS ベクター</th>
                        <th>出典</th>
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                        <td>V3.1</td>
                        <td>5.8</td>
                        <td>MEDIUM</td>
                        <td>
                            CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:L                                    <div class="m-0">
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                <span class="text-gray-700 cursor-pointer mb-0">詳細情報</span>
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            <div id="metric-179408985249620" class="fs-7 ms-1 collapse" style="">
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                    <div class="d-flex align-items-center ps-10 mb-n1">
                        <div class="text-gray-600 fs-7">
                            <h4 class='bg-light border border-gray-300 rounded p-2'>Base: Exploitabilty Metrics</h4><p>The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.</p><div class='tw-h5' style='padding-left:10px'>Attack Vector</div><p style='padding-left:10px'>This metric reflects the context by which vulnerability exploitation is possible.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>Network</p></div><div style='flex: 1;margin-left:5px;'><p>The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).</p></div></div><div class='tw-h5' style='padding-left:10px'>Attack Complexity</div><p style='padding-left:10px'>This metric describes the conditions beyond the attacker’s control that must exist in order to exploit the vulnerability.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>High</p></div><div style='flex: 1;margin-left:5px;'><p> successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected.</p></div></div><div class='tw-h5' style='padding-left:10px'>Privileges Required</div><p style='padding-left:10px'>This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>None</p></div><div style='flex: 1;margin-left:5px;'><p>The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.</p></div></div><div class='tw-h5' style='padding-left:10px'>User Interaction</div><p style='padding-left:10px'>This metric captures the requirement for a human user, other than the attacker, to participate in the successful compromise of the vulnerable component.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>Required</p></div><div style='flex: 1;margin-left:5px;'><p>Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited. For example, a successful exploit may only be possible during the installation of an application by a system administrator.</p></div></div><h4 class='bg-light border border-gray-300 rounded p-2'>Base: Scope Metrics</h4><p>The Scope metric captures whether a vulnerability in one vulnerable component impacts resources in components beyond its security scope.</p><div class='tw-h5' style='padding-left:10px'>Scope</div><p style='padding-left:10px'>Formally, a security authority is a mechanism (e.g., an application, an operating system, firmware, a sandbox environment) that defines and enforces access control in terms of how certain subjects/actors (e.g., human users, processes) can access certain restricted objects/resources (e.g., files, CPU, memory) in a controlled manner. All the subjects and objects under the jurisdiction of a single security authority are considered to be under one security scope. If a vulnerability in a vulnerable component can affect a component which is in a different security scope than the vulnerable component, a Scope change occurs. Intuitively, whenever the impact of a vulnerability breaches a security/trust boundary and impacts components outside the security scope in which vulnerable component resides, a Scope change occurs.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>Changed</p></div><div style='flex: 1;margin-left:5px;'><p>An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.</p></div></div><h4 class='bg-light border border-gray-300 rounded p-2'>Base: Impact Metrics</h4><p>The Impact metrics capture the effects of a successfully exploited vulnerability on the component that suffers the worst outcome that is most directly and predictably associated with the attack. Analysts should constrain impacts to a reasonable, final outcome which they are confident an attacker is able to achieve.</p><div class='tw-h5' style='padding-left:10px'>Confidentiality Impact</div><p style='padding-left:10px'>This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>Low</p></div><div style='flex: 1;margin-left:5px;'><p>There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.</p></div></div><div class='tw-h5' style='padding-left:10px'>Integrity Impact</div><p style='padding-left:10px'>This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>Low</p></div><div style='flex: 1;margin-left:5px;'><p>Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.</p></div></div><div class='tw-h5' style='padding-left:10px'>Availability Impact</div><p style='padding-left:10px'>This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>Low</p></div><div style='flex: 1;margin-left:5px;'><p>Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.</p></div></div><h4 class='bg-light border border-gray-300 rounded p-2'>Temporal Metrics</h4><p>The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence in the description of a vulnerability.</p><h4 class='bg-light border border-gray-300 rounded p-2'>Environmental Metrics</h4><p>These metrics enable the analyst to customize the CVSS score depending on the importance of the affected IT asset to a user’s organization, measured in terms of Confidentiality, Integrity, and Availability.</p>                        </div>
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                        <td>V3.1</td>
                        <td>4.7</td>
                        <td>MEDIUM</td>
                        <td>
                            CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:L/A:N                                    <div class="m-0">
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                <span class="text-gray-700 cursor-pointer mb-0">詳細情報</span>
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                <div class="mb-4">
                    <div class="d-flex align-items-center ps-10 mb-n1">
                        <div class="text-gray-600 fs-7">
                            <h4 class='bg-light border border-gray-300 rounded p-2'>Base: Exploitabilty Metrics</h4><p>The Exploitability metrics reflect the characteristics of the thing that is vulnerable, which we refer to formally as the vulnerable component.</p><div class='tw-h5' style='padding-left:10px'>Attack Vector</div><p style='padding-left:10px'>This metric reflects the context by which vulnerability exploitation is possible.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>Network</p></div><div style='flex: 1;margin-left:5px;'><p>The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed below, up to and including the entire Internet. Such a vulnerability is often termed “remotely exploitable” and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).</p></div></div><div class='tw-h5' style='padding-left:10px'>Attack Complexity</div><p style='padding-left:10px'>This metric describes the conditions beyond the attacker’s control that must exist in order to exploit the vulnerability.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>High</p></div><div style='flex: 1;margin-left:5px;'><p> successful attack depends on conditions beyond the attacker's control. That is, a successful attack cannot be accomplished at will, but requires the attacker to invest in some measurable amount of effort in preparation or execution against the vulnerable component before a successful attack can be expected.</p></div></div><div class='tw-h5' style='padding-left:10px'>Privileges Required</div><p style='padding-left:10px'>This metric describes the level of privileges an attacker must possess before successfully exploiting the vulnerability.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>None</p></div><div style='flex: 1;margin-left:5px;'><p>The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files of the vulnerable system to carry out an attack.</p></div></div><div class='tw-h5' style='padding-left:10px'>User Interaction</div><p style='padding-left:10px'>This metric captures the requirement for a human user, other than the attacker, to participate in the successful compromise of the vulnerable component.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>Required</p></div><div style='flex: 1;margin-left:5px;'><p>Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited. For example, a successful exploit may only be possible during the installation of an application by a system administrator.</p></div></div><h4 class='bg-light border border-gray-300 rounded p-2'>Base: Scope Metrics</h4><p>The Scope metric captures whether a vulnerability in one vulnerable component impacts resources in components beyond its security scope.</p><div class='tw-h5' style='padding-left:10px'>Scope</div><p style='padding-left:10px'>Formally, a security authority is a mechanism (e.g., an application, an operating system, firmware, a sandbox environment) that defines and enforces access control in terms of how certain subjects/actors (e.g., human users, processes) can access certain restricted objects/resources (e.g., files, CPU, memory) in a controlled manner. All the subjects and objects under the jurisdiction of a single security authority are considered to be under one security scope. If a vulnerability in a vulnerable component can affect a component which is in a different security scope than the vulnerable component, a Scope change occurs. Intuitively, whenever the impact of a vulnerability breaches a security/trust boundary and impacts components outside the security scope in which vulnerable component resides, a Scope change occurs.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>Changed</p></div><div style='flex: 1;margin-left:5px;'><p>An exploited vulnerability can affect resources beyond the security scope managed by the security authority of the vulnerable component. In this case, the vulnerable component and the impacted component are different and managed by different security authorities.</p></div></div><h4 class='bg-light border border-gray-300 rounded p-2'>Base: Impact Metrics</h4><p>The Impact metrics capture the effects of a successfully exploited vulnerability on the component that suffers the worst outcome that is most directly and predictably associated with the attack. Analysts should constrain impacts to a reasonable, final outcome which they are confident an attacker is able to achieve.</p><div class='tw-h5' style='padding-left:10px'>Confidentiality Impact</div><p style='padding-left:10px'>This metric measures the impact to the confidentiality of the information resources managed by a software component due to a successfully exploited vulnerability.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>Low</p></div><div style='flex: 1;margin-left:5px;'><p>There is some loss of confidentiality. Access to some restricted information is obtained, but the attacker does not have control over what information is obtained, or the amount or kind of loss is limited. The information disclosure does not cause a direct, serious loss to the impacted component.</p></div></div><div class='tw-h5' style='padding-left:10px'>Integrity Impact</div><p style='padding-left:10px'>This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>Low</p></div><div style='flex: 1;margin-left:5px;'><p>Modification of data is possible, but the attacker does not have control over the consequence of a modification, or the amount of modification is limited. The data modification does not have a direct, serious impact on the impacted component.</p></div></div><div class='tw-h5' style='padding-left:10px'>Availability Impact</div><p style='padding-left:10px'>This metric measures the impact to the availability of the impacted component resulting from a successfully exploited vulnerability.</p><div style='display:flex;padding-left:10px;'><div style='width:70px;'><p class='text-center bg-gray-800 text-gray-100 rounded'>None</p></div><div style='flex: 1;margin-left:5px;'><p>There is no impact to availability within the impacted component.</p></div></div><h4 class='bg-light border border-gray-300 rounded p-2'>Temporal Metrics</h4><p>The Temporal metrics measure the current state of exploit techniques or code availability, the existence of any patches or workarounds, or the confidence in the description of a vulnerability.</p><h4 class='bg-light border border-gray-300 rounded p-2'>Environmental Metrics</h4><p>These metrics enable the analyst to customize the CVSS score depending on the importance of the affected IT asset to a user’s organization, measured in terms of Confidentiality, Integrity, and Availability.</p>                        </div>
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                        <td>nvd@nist.gov</td>
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<h2>EPSS</h2>
            <div class="mb-4">EPSSは脆弱性が悪用される可能性を予測するスコアリングモデルです。</div>

<h3>EPSSスコア</h3>
            <div>EPSSモデルは0から1（0〜100%）の確率スコアを算出します。スコアが高いほど、脆弱性が悪用される可能性が高いことを示します。</div>
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<h3>EPSSパーセンタイル</h3>
            <div>パーセンタイルはCVEをEPSSスコアで順位付けするために使用されます。例えば、EPSSスコアで95パーセンタイルにあるCVEは、他の95%のCVEよりも悪用される可能性が高いことを意味します。パーセンタイルはCVEのEPSSスコアを他のCVEと比較するために使用されます。</div>
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                <a href="https://www.first.org/epss/" target="_parent">EPSS First.org<i class="ki-duotone ki-exit-right-corner" style="font-size: 10px;vertical-align:8px"><span class="path1"></span><span class="path2"></span></i></a>
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                <br><table border="1" cellspacing="0" cellpadding="5" class="table table-bordered"><thead><tr><th>日付</th><th>パーセンタイル</th></tr></thead><tbody><tr><td>2022-08-07</td><td>3%</td></tr><tr><td>2022-08-14</td><td>39%</td></tr><tr><td>2022-11-13</td><td>4%</td></tr><tr><td>2022-11-20</td><td>39%</td></tr><tr><td>2022-11-27</td><td>4%</td></tr><tr><td>2023-02-26</td><td>41%</td></tr><tr><td>2023-03-12</td><td>23%</td></tr><tr><td>2023-03-26</td><td>3%</td></tr><tr><td>2023-07-09</td><td>35%</td></tr><tr><td>2023-08-13</td><td>44%</td></tr><tr><td>2023-09-10</td><td>46%</td></tr><tr><td>2024-01-14</td><td>39%</td></tr><tr><td>2024-02-11</td><td>38%</td></tr><tr><td>2024-06-02</td><td>39%</td></tr><tr><td>2024-06-30</td><td>39%</td></tr><tr><td>2024-07-07</td><td>4%</td></tr><tr><td>2024-08-04</td><td>39%</td></tr><tr><td>2024-08-11</td><td>4%</td></tr><tr><td>2024-11-17</td><td>41%</td></tr><tr><td>2024-12-22</td><td>38%</td></tr><tr><td>2025-01-19</td><td>38%</td></tr><tr><td>2025-02-16</td><td>41%</td></tr><tr><td>2025-02-16</td><td>41%</td></tr><tr><td>2025-03-09</td><td>46%</td></tr><tr><td>2025-03-09</td><td>46%</td></tr><tr><td>2025-03-18</td><td>45%</td></tr><tr><td>2025-03-30</td><td>44%</td></tr><tr><td>2025-04-15</td><td>47%</td></tr><tr><td>2025-04-28</td><td>53%</td></tr><tr><td>2025-08-07</td><td>54%</td></tr><tr><td>2025-08-11</td><td>64%</td></tr><tr><td>2025-08-21</td><td>74%</td></tr><tr><td>2025-09-20</td><td>76%</td></tr><tr><td>2025-10-01</td><td>74%</td></tr><tr><td>2025-10-04</td><td>75%</td></tr><tr><td>2025-10-13</td><td>73%</td></tr><tr><td>2025-11-01</td><td>74%</td></tr><tr><td>2025-11-04</td><td>73%</td></tr><tr><td>2025-11-18</td><td>57%</td></tr><tr><td>2025-11-21</td><td>73%</td></tr><tr><td>2025-12-01</td><td>74%</td></tr><tr><td>2025-12-04</td><td>73%</td></tr><tr><td>2026-01-01</td><td>74%</td></tr><tr><td>2026-01-04</td><td>73%</td></tr><tr><td>2026-02-22</td><td>74%</td></tr><tr><td>2026-03-01</td><td>74%</td></tr><tr><td>2026-03-08</td><td>74%</td></tr><tr><td>2026-03-29</td><td>73%</td></tr><tr><td>2026-05-31</td><td>75%</td></tr></tbody></table>            </div>

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<h2 class="tw-h3">関連製品</h2>
<h3 class='tw-h4'>構成 0</h3><p>Ckeditor>>Ckeditor5-html-embed >> Version  ～まで（含まない） 35.0.1</p><p>Ckeditor>>Ckeditor5-html-support >> Version  ～まで（含まない） 35.0.1</p><p>Ckeditor>>Ckeditor5-markdown-gfm >> Version  ～まで（含まない） 35.0.1</p>            <div class="separator my-10"></div>

<h2 class='tw-h3'>参考資料</h2><div style='margin-bottom: 10px;'><a href='https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-42wq-rch8-6f6j' target='_blank'>https://github.com/ckeditor/ckeditor5/security/advisories/GHSA-42wq-rch8-6f6j <i class="ki-duotone ki-exit-right-corner" style="font-size: 10px;vertical-align:8px"><span class="path1"></span><span class="path2"></span></i></a><br><span style='margin-left:20px;'>Tags : x_refsource_CONFIRM</span></div><div style='margin-bottom: 10px;'><a href='https://ckeditor.com/docs/ckeditor5/latest/features/general-html-support.html' target='_blank'>https://ckeditor.com/docs/ckeditor5/latest/features/general-html-support.html <i class="ki-duotone ki-exit-right-corner" style="font-size: 10px;vertical-align:8px"><span class="path1"></span><span class="path2"></span></i></a><br><span style='margin-left:20px;'>Tags : x_refsource_MISC</span></div><div style='margin-bottom: 10px;'><a href='https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html' target='_blank'>https://ckeditor.com/docs/ckeditor5/latest/features/html-embed.html <i class="ki-duotone ki-exit-right-corner" style="font-size: 10px;vertical-align:8px"><span class="path1"></span><span class="path2"></span></i></a><br><span style='margin-left:20px;'>Tags : x_refsource_MISC</span></div><div style='margin-bottom: 10px;'><a href='https://ckeditor.com/docs/ckeditor5/latest/features/markdown.html' target='_blank'>https://ckeditor.com/docs/ckeditor5/latest/features/markdown.html <i class="ki-duotone ki-exit-right-corner" style="font-size: 10px;vertical-align:8px"><span class="path1"></span><span class="path2"></span></i></a><br><span style='margin-left:20px;'>Tags : x_refsource_MISC</span></div><div class="separator my-10"></div>                            </div>
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CVE-2022-31175 : 詳細

CVE-2022-31175

CVE の説明

Cross-site scripting caused by the editor instance destroying process in ckeditor5