Vulnerability details

CVE-2026-27780

Gitea Open Source Git Server

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

CVSS 3.1

9.8Critical

Official 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.

CVSS scores

Score	Version	Source	Vector
9.8Critical	3.1	CISA ADP / Vulnrichment (CISA-ADP)	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`

Affected products

Vendor	Product	Versions	Source
Gitea	Gitea Open Source Git Server	v < 1.26.0	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/go-gitea/gitea/pull/36963 patch
https://github.com/go-gitea/gitea/releases/tag/v1.26.0 release-notes
https://blog.gitea.com/release-of-1.26.0/ release-notes

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Details

Published: 2026-07-03
Last updated: 2026-07-06
State: Published
Assigner (CNA): Gitea

Exploit prediction (EPSS)

0.63%

Probability of exploitation in 30 days

50.7%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: Yes
Exploitation: None
Technical impact: Total

Weaknesses (CWE)

CWE-863
Incorrect Authorization