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Vulnerability IntelligenceCVE-2026-27780

CVE-2026-27780

CRITICAL9.8

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

Published Jul 3, 2026

Modified 2 weeks ago

Details

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.

References

https://blog.gitea.com/release-of-1.26.0/

https://github.com/go-gitea/gitea/pull/36963

https://github.com/go-gitea/gitea/releases/tag/v1.26.0

https://www.cve.org/CVERecord?id=CVE-2026-27780

CVSS Analysis

CVSS v3.1

9.8

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Scope

Scope

UnchangedS:U

Impact

Confidentiality

HighC:H

Integrity

HighI:H

Availability

HighA:H

9.8/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

Access Control

Incorrect Authorization

Ecosystems

Timeline

PublishedJul 3, 2026

ModifiedJul 6, 2026

CVE-2026-27780 | Mondoo Vulnerability Intelligence