What is CVE-2026-27775?

CVE-2026-27775 is a high-severity vulnerability in Gitea Open Source Git Server, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-07-03.

How severe is CVE-2026-27775?

High severity. CVSS v3 base score is 8.8 out of 10.

Auth bypass in Gitea Open Source Git Server

CVE-2026-27775

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.

Vulnerability class: Broken Access Control

EPSS: 0.006 (44.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Gitea Open Source Git Server — versions 1.25.5

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

88ee5874-cf24-4952-aea0-31affedb7ff2 (vendor-advisory)
88ee5874-cf24-4952-aea0-31affedb7ff2 (patch)
88ee5874-cf24-4952-aea0-31affedb7ff2 (release-notes)
88ee5874-cf24-4952-aea0-31affedb7ff2 (release-notes)

Frequently asked questions

What is CVE-2026-27775?: CVE-2026-27775 is a high-severity vulnerability in Gitea Open Source Git Server, classified under Incorrect Authorization. CVSS score: 8.8/10. Published 2026-07-03.
How severe is CVE-2026-27775?: High severity. CVSS v3 base score is 8.8 out of 10.