CVE-2026-68957 in Gitea
Summary
by MITRE • 10/14/2026
Gitea's API and web issue-search paths do not treat restricted accounts as anonymous viewers when evaluating Limited-visibility repository owners. A restricted user can search and retrieve issue titles and bodies that should be hidden by the owner's visibility policy. Keyword matching can also reveal that hidden issue content or comments contain a supplied term.
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Analysis
by VulDB Data Team • 10/14/2026
The vulnerability identified in Gitea represents a critical access control failure within its API and web interface, specifically affecting how restricted user accounts are processed during repository search operations. In typical Git hosting platforms like Gitea, repositories can be configured with limited visibility settings to restrict access to specific users or groups while keeping the rest of the content private from anonymous viewers or unauthorized members. The core technical flaw lies in the logic that evaluates these visibility policies when a restricted user initiates an issue search. Instead of treating such accounts as unauthenticated or anonymous entities for the purpose of enforcing strict privacy boundaries, the system incorrectly grants them elevated privileges akin to those with explicit access rights. This misclassification allows users who should be denied any insight into private repository contents to bypass these restrictions entirely through the search functionality.
From a technical perspective, this flaw manifests in two distinct but related behaviors within the issue-search paths. First, restricted accounts are able to retrieve both the titles and bodies of issues that reside in repositories where they do not have explicit permission to view content. This direct leakage of structured data violates the fundamental principle of least privilege and undermines the confidentiality guarantees provided by visibility settings. Second, even when a user does not receive full issue details due to other potential safeguards or partial filtering, keyword matching mechanisms still expose sensitive information indirectly. By submitting specific search terms, an attacker can determine whether hidden issues or comments contain those exact words. This side-channel effect allows for content inference attacks where the mere existence of certain keywords in private discussions is revealed, effectively leaking semantic data even if the full text remains obscured.
The operational impact of this vulnerability is significant for organizations relying on Gitea for secure code collaboration and issue tracking. Confidential project details, bug reports containing sensitive technical information, or internal communications stored within issues can be exposed to unauthorized personnel. This exposure compromises not only intellectual property but also potentially violates regulatory compliance requirements regarding data privacy and access control, such as those found in GDPR or HIPAA if applicable personal health or financial data is involved. Furthermore, the ability to infer content through keyword matching enables reconnaissance activities where attackers map out internal discussions without triggering obvious alerts associated with direct unauthorized access attempts. This erodes trust in the platform’s security model and may lead to unintended disclosure of strategic project directions or sensitive operational details.
This vulnerability aligns closely with CWE-284, which describes Improper Access Control, as it involves a failure to properly enforce restrictions on user actions based on their authorization level. Additionally, from an offensive security perspective, this behavior facilitates ATT&CK technique T1078, Valid Accounts, where attackers leverage legitimate but improperly restricted credentials to access resources they should not be able to see. It also relates to CWE-209, which covers the generation of error messages containing sensitive information, as the keyword matching feature inadvertently reveals data presence without proper sanitization or filtering for unauthorized viewers.
Mitigation strategies must focus on correcting the underlying authorization logic within Gitea’s search modules. The primary fix involves ensuring that all repository access checks are performed consistently across both direct content retrieval and metadata-based operations like searching. Restricted users should be treated as anonymous visitors when evaluating visibility policies, meaning they should receive no results for private repositories unless explicitly granted permission. Developers must audit the code paths handling issue searches to ensure that keyword matching does not leak information about hidden items by returning partial matches or existence indicators without proper access validation. Until a patch is applied, administrators can mitigate risk by restricting search capabilities where possible and monitoring logs for unusual query patterns from restricted accounts. Regular security audits of visibility configurations are also recommended to ensure no other endpoints suffer from similar logic flaws regarding anonymous versus authenticated user handling.