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CVE-2026-27771 — Vulnerability in code.gitea.io/gitea — CVE Details

HIGH

Gitea has insufficient permission checks for Composer package source links

Published July 17, 2026Updated July 22, 2026Source: osv

Summary

### CVE Description Gitea versions up to and including 1.26.1 have insufficient permission checks for Composer package source links, which can expose private or internal package source information. ### Summary A critical vulnerability has been discovered in Gitea. It was already reported via (security@gitea.io) from (dev@noscope.com), and submitted an encrypted report.

Advisory Timeline

  • First published July 17, 2026 (87 days ago).
  • Last revised July 22, 2026 — 5 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

Go
Update code.gitea.io/gitea to 1.26.2 or later
go get code.gitea.io/gitea@v1.26.2

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (1)

Affects 1 ecosystem: go (1).

PackageEcosystemAffectedFixed In
code.gitea.io/gitea
go
All versions1.26.2

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

  • CWE-862
    Missing AuthorizationMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 8.2 score means for each attack dimension.

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

References

Frequently Asked Questions

What is CVE-2026-27771?
Gitea has insufficient permission checks for Composer package source links This vulnerability has been assigned a severity rating of HIGH (CVSS score: 8.2/10).
How do I check if my project is affected by CVE-2026-27771?
CVE-2026-27771 affects code.gitea.io/gitea. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-27771 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score
8.2

High exploitability or significant impact. Prioritize remediation within days.

Also Known As

GHSA-8qw8-rq86-9pc2
GO-2026-6017

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