CVE-2026-27771
HighCVSS 8.2Exploitation Probability (EPSS)
Very high risk98th percentile - higher than 98% of all known CVEs
Summary
A vulnerability in Gitea up to version 1.26.1 is caused by insufficient permission checks for Composer package source links. This can expose private or internal package source information.
Risk Assessment
The risk involves potential leakage of confidential data about internal Composer package repositories, which could allow unauthorized users to access proprietary resources.
Recommendation
It is recommended to immediately upgrade Gitea to version 1.26.2 or later, which includes a fix for this vulnerability. Also review permission settings for Composer packages.
Other vulnerabilities in Gitea
See all- CVE-2026-60004CriticalActively exploited
Gitea before version 1.27.1 allows remote code execution via the diffpatch API through Git hook installation.
- CVE-2026-58508Critical
Two SSRF vulnerabilities in Gitea migration/mirror (DNS rebinding + missing re-validation).
- CVE-2026-58443Critical
Public-only repository tokens can update private PR head branches.
- CVE-2026-58433Critical
The team-repository linking endpoint bypasses the RepoAdminChangeTeamAccess organization setting. This means a user without proper permissions can change repository-team assignments.
- CVE-2026-56750Critical
Theft of the Remember-Me token in Gitea does not invalidate the attacker's session, allowing continued unauthorized access.
- CVE-2026-56654Critical
The vulnerability allows privilege escalation via access token scope escalation in the API.
- CVE-2026-56443Critical
A public-only scope token can bypass restrictions on limited-visibility owners (Repository and Package categories) — residual after CVE-2026-25714 / PR #37118.
- CVE-2026-55982Critical
The OIDC userinfo endpoint returns identity claims without enforcing API token scopes.
- CVE-2026-58426Critical
The vulnerability in Gitea Actions Artifacts V4 stems from HMAC ambiguity in signed URLs, allowing cross-repository artifact read and cross-task upload-state write.
- CVE-2026-27780Critical
A vulnerability in Gitea before version 1.26.0 fails to close the connection on bufio.Scanner errors while processing pre-receive hook input, allowing oversized input to bypass branch-protection checks.
Original NVD description (English source)
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.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS