Cloud Vulnerability DB
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Vulnerability DatabaseCVE-2021-39936
CVE-2021-39936:
GitLab vulnerability analysis and mitigation
Overview
Improper access control in GitLab CE/EE affecting all versions starting from 10.7 before 14.3.6, all versions starting from 14.4 before 14.4.4, all versions starting from 14.5 before 14.5.2, allows an attacker in possession of a deploy token to access a project's disabled wiki (GitLab Security).
Technical details
The vulnerability stems from an access control issue where deploy tokens could be used to access wikis even when they were explicitly disabled. The vulnerability has a CVSS v3.1 score of 4.3 (MEDIUM) with the vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N (NVD Database).
Impact
The vulnerability allows unauthorized access to disabled wikis through deploy tokens, potentially exposing sensitive information that was intended to be restricted. This could lead to information disclosure of wiki content that project administrators had explicitly chosen to disable (GitLab Security).
Mitigation and workarounds
The vulnerability has been patched in GitLab versions 14.3.6, 14.4.4, and 14.5.2. Users are strongly recommended to upgrade to these versions or later to mitigate the vulnerability (GitLab Security).
Additional resources
Source: This report was generated using AI
Related GitLab vulnerabilities:
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