CVE-2026-27775

high

Description

Gitea 1.25.5 caches a branch-specific write-permission result across multiple refs in one pre-receive hook session, allowing a per-branch maintainer-edit grant to be reused for other refs and escalate to full repository write access.

References

https://github.com/go-gitea/gitea/security/advisories/GHSA-649p-mmhf-85c7

https://latesthackingnews.com/2026/07/07/gitea-docker-vulnerability-exploitation/

https://github.com/go-gitea/gitea/releases/tag/v1.26.3

https://github.com/go-gitea/gitea/pull/38151

https://blog.gitea.com/release-of-1.26.3-and-1.26.4/

Details

Source: Mitre, NVD

Published: 2026-07-03

Updated: 2026-07-06

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 8.8

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