CVE-2026-47203
2026-06-19
21h16 +00:00
21h16 +00:00
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Deskripsi CVE
Authelia is an open-source authentication and authorization server providing two-factor authentication and single sign-on (SSO) for applications via a web portal. In versions 4.38.0 through 4.39.19, when a user authenticates via Basic Auth (i.e via the `Authorization` header with the `Basic` scheme) on the authz verification endpoint, Authelia takes the username directly from the `Authorization` header and passes it as is to the regulation system for ban checking and attempt recording. LDAP treats usernames case insensitively : `john`, `John`, and `JOHN` all bind as the same user. But the regulation SQL queries treat the lookup of these values in certain scenarios as case sensitive. This allows each variation of a usernames case to have its own ban bucket. Upgrade to 4.39.20 to receive a patch. As a workaround, explicitly disable the basic auth mechanism.
Informasi CVE
Kelemahan Terkait
| Nama Kelemahan | Sumber | |
|---|---|---|
| Improper Handling of Case Sensitivity The product does not properly account for differences in case sensitivity when accessing or determining the properties of a resource, leading to inconsistent results. |
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| Improper Restriction of Excessive Authentication Attempts The product does not implement sufficient measures to prevent multiple failed authentication attempts within a short time frame. |
