Authenticated membership disclosure via absent organization checks
Published Aug 13, 2026 · Updated Aug 13, 2026
Improper access control in Gitea 1.26.4 and earlier allows remote authenticated users to disclose private organization membership. The IsPublicMember and ListPublicMembers handlers return membership results without checking whether the requester can view the organization. A valid API token plus a known private organization and username is sufficient; 204 or 200 responses expose the hidden relationship.
Summary
What happened
Improper access control in Gitea 1.26.4 and earlier allows remote authenticated users to disclose private organization membership. The IsPublicMember and ListPublicMembers handlers return membership results without checking whether the requester can view the organization. A valid API token plus a known private organization and username is sufficient; 204 or 200 responses expose the hidden relationship.
The record
- CVE
- CVE-2026-58417
- Published
- Aug 13, 2026
- Updated
- Aug 13, 2026
- Vendor
- Gitea
- Product
- Gitea
- Classifications
- T1087
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 13, 2026CVE publishedPublication date reported by the CVE source.
- Aug 13, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=1.26.4
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- Gitea private organization membership REST API proof of conceptproof of concept · demonstrated
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Technologies
Your stack
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Your stack
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