CVE-2026-27771

high

Description

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.

References

https://github.com/go-gitea/gitea/security/advisories/GHSA-8qw8-rq86-9pc2

https://thehackernews.com/2026/08/critical-gitea-flaw-let-unauthenticated.html

https://www.securityweek.com/gitea-vulnerability-exposed-30000-deployments-to-attacks/

https://thehackernews.com/2026/05/gitea-vulnerability-exposes-private.html

https://github.com/gexiro-global/forgeguard

https://github.com/HORKimhab/CVE-2026-27771

https://www.noscope.com/blog/gitea-instances-exposing-private-container

https://github.com/go-gitea/gitea/releases/tag/v1.26.2

https://github.com/go-gitea/gitea/pull/37610

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-41635

https://blog.gitea.com/release-of-1.26.2/

Details

Source: Mitre, NVD

Published: 2026-07-03

Updated: 2026-07-07

Risk Information

CVSS v2

Base Score: 8.5

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

Severity: High

CVSS v3

Base Score: 8.2

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N