CVE-2026-58417
Received Received - Intake

Organization Membership Exposure in REST API

Publication date: 2026-08-13

Last updated on: 2026-08-13

Assigner: Gitea Limited

Description
REST API exposes organization membership of private organizations to public

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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-2026-58417
EUVD
EUVD-2026-58152

Affected Vendors & Products

Showing 2 associated CPEs
Vendor Product Version / Range
go-gitea gitea to 1.27.0 (exc)
go-gitea gitea From 1.27.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-284 The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

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Executive Summary

This vulnerability affects Gitea versions 1.26.4 and earlier. It involves a REST API endpoint that exposes whether a user is a public member of a private organization. This information should remain hidden as private organizations are designed to conceal membership details.

Detection Guidance

To detect this vulnerability, check if your Gitea instance is running version 1.26.4 or earlier. Use the command: curl -s http://your-gitea-server/api/v1/version | grep version. If the version is <=1.26.4, the system is vulnerable. Additionally, monitor API logs for unusual GET requests to /orgs/{org}/public_members/{username} endpoints.

Impact Analysis

An attacker could exploit this to determine if a specific user is a member of a private organization. This leaks sensitive membership information, potentially revealing organizational structures or affiliations that should be confidential.

Compliance Impact

This vulnerability could lead to non-compliance with privacy regulations like GDPR or HIPAA by exposing sensitive membership data. Unauthorized disclosure of such information may violate data protection requirements.

Mitigation Strategies

Upgrade Gitea to version 1.27.0 or later immediately. If upgrading is not possible, restrict access to the vulnerable API endpoint by configuring firewall rules or disabling public access to private organization membership data.

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