CVE-2026-27780

Gitea pre-receive hook can miss branch-protection checks after scanner errors

Published Jul 3, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Gitea versions before 1.26.0 do not fail closed on bufio.Scanner errors while processing pre-receive hook input, allowing oversized input to bypass branch-protection checks.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Github GHSA Github GHSA GHSA-vhq7-fwwh-7hjf Gitea pre-receive hook scanner errors allow branch-protection bypass
History
Type Values Removed Values Added
First Time appeared Gitea
Gitea gitea Open Source Git Server
Vendors & Products Gitea
Gitea gitea Open Source Git Server
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description Gitea versions before 1.26.0 do not fail closed on bufio.Scanner errors while processing pre-receive hook input, allowing oversized input to bypass branch-protection checks.
Title Gitea pre-receive hook can miss branch-protection checks after scanner errors
Weaknesses CWE-863
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
Gitea
Published
Updated
Jul 6, 2026, 3:20 PM
Reserved
Mar 3, 2026, 3:25 AM
Status
Deferred
Published
Jul 3, 2026, 9:16 PM
Modified
Oct 25, 2026, 3:10 PM