CVE-2026-63205 : 상세 정보

CVE-2026-63205

2026-09-25
19h17 +00:00
Authorization problems
A01-Broken Access Control
2026-09-29
20h17 +00:00
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CVE 설명

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, when creating or updating an email signature, Zammad processes inline images referenced in the signature body. If a signature body contains an HTML img tag pointing to any existing attachment, the system copies that attachment into a new signature-owned record, without checking whether the user has permission to access the original attachment. The newly created copy is then downloadable by the same channel-admin user, because attachment access is determined by the copy's owner (the signature), not the original object (e.g., a ticket or knowledge-base article). This allows a user with any of the admin.channel_email, admin.channel_google, admin.channel_microsoft365, or admin.channel_microsoft_graph permissions to read attachments they would otherwise be denied access to, such as ticket attachments belonging to groups they are not a member of. This issue is fixed in version 7.1.2.

CVE 정보

관련 약점

CWE-ID 약점 이름 출처
CWE-639 Authorization Bypass Through User-Controlled Key
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
CWE-862 Missing Authorization
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

참고 자료