CVE-2026-27780: critical vulnerability in Gitea Open Source Git Server
Gitea pre-receive hook can miss branch-protection checks after scanner errors
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.8epss 0.6%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products
Gitea · Gitea Open Source Git ServerRelated CVEs — Gitea Open Source Git Server
In the same product, most dangerous first.
CVE-2024-6886CRITICALInproper Sanitation of field leading to stored XSSEPSS 33.0%CVE-2026-20896CRITICALGitea Docker image trusts spoofable reverse-proxy headers by defaultEPSS 2.8%CVE-2026-27771HIGHGitea Composer package source links use insufficient permission checksEPSS 1.4%CVE-2026-27775HIGHGitea pre-receive hook permission cache allows full repository write accessEPSS 0.9%CVE-2026-56654CRITICALPrivilege Escalation via Access Token Scope Escalation in APIEPSS 0.8%CVE-2026-26292CRITICALGitea LFS mirror synchronization bypasses migration HTTP transport restrictionsEPSS 0.7%