What is CVE-2026-27771?

CVE-2026-27771 is a high-severity vulnerability in Gitea Open Source Git Server, classified under Missing Authorization. CVSS score: 8.2/10. Published 2026-07-03.

How severe is CVE-2026-27771?

High severity. CVSS v3 base score is 8.2 out of 10.

Is CVE-2026-27771 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Auth bypass in Gitea Open Source Git Server

CVE-2026-27771

Gitea versions up to and including 1.26.1 have insufficient permission checks for Composer package source links, which can expose private or internal package source information.

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N.

Affected products

Gitea Open Source Git Server — versions 0

Weakness classification (CWE)

CWE-862 — Missing Authorization

Public proof-of-concept exploits

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-2026-27771?: CVE-2026-27771 is a high-severity vulnerability in Gitea Open Source Git Server, classified under Missing Authorization. CVSS score: 8.2/10. Published 2026-07-03.
How severe is CVE-2026-27771?: High severity. CVSS v3 base score is 8.2 out of 10.
Is CVE-2026-27771 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.