CVE-2026-50105
Received Received - Intake

RSS/Atom Feed Handlers Bypass Scope Confinement

Publication date: 2026-08-13

Last updated on: 2026-08-13

Assigner: Gitea Limited

Description
RSS/Atom feed handlers bypass API-token scope & public-only confinement (incomplete fix of #37698)

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Meta Information

Published
2026-08-13
Last Modified
2026-08-13
Generated
2026-08-13
AI Q&A
2026-08-13
EPSS Evaluated
N/A
NVD
CVE-2026-50105
EUVD
EUVD-2026-58136

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
go-gitea gitea to 1.26.4 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-862 The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
CWE-200 The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information.

Attack-Flow Graph

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Executive Summary

This vulnerability allows bypass of API-token scope restrictions in Gitea versions up to 1.26.4. Personal access tokens restricted from accessing private repository content via download routes can still retrieve private data through feed routes like /releases.rss or /{owner}/{repo}.rss. The issue is an incomplete fix for a prior vulnerability (CVE-2026-37698).

Detection Guidance

Check Gitea logs for unusual access to feed endpoints like /releases.rss, /rss/branch/*, /{owner}/{repo}.rss, or /{user}.rss. Monitor for requests using personal access tokens that bypass expected scope restrictions.

Impact Analysis

If your personal access token is leaked or shared, attackers could use it to access private repository content through feed routes even if the token is restricted. This includes commit metadata, release notes, and private activity streams.

Mitigation Strategies

Upgrade Gitea to a version beyond 1.26.4 where token-scope checks are enforced in feed handlers. Review and restrict personal access tokens with excessive privileges.

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