VulnerabilityDeferred

CVE-2026-27780

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.

CRITICAL 9.8EPSS 0.64%

Does this matter?

High impact if exploited, but EPSS currently rates exploitation as unlikely (0.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.

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 3.1: 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS: 0.64% probability · 49th percentile
CISA KEV: Not listed
Weakness: CWE-863
Source: 88ee5874-cf24-4952-aea0-31affedb7ff2

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.