CVE-2026-20912

CRITICAL

9.1

Description

Gitea does not properly validate repository ownership when linking attachments to releases. An attachment uploaded to a private repository could potentially be linked to a release in a different public repository, making it accessible to unauthorized users.

CVE Details

CVSS v3.1 Score9.1

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/22/2026

Last Modified1/29/2026

Sourcenvd

Honeypot Sightings0

Affected Products

gitea:gitea

Weaknesses (CWE)

CWE-284CWE-639

References

https://blog.gitea.com/release-of-1.25.4/(88ee5874-cf24-4952-aea0-31affedb7ff2)

https://github.com/go-gitea/gitea/pull/36320(88ee5874-cf24-4952-aea0-31affedb7ff2)

https://github.com/go-gitea/gitea/pull/36355(88ee5874-cf24-4952-aea0-31affedb7ff2)

https://github.com/go-gitea/gitea/releases/tag/v1.25.4(88ee5874-cf24-4952-aea0-31affedb7ff2)

https://github.com/go-gitea/gitea/security/advisories/GHSA-vfmv-f93v-37mw(88ee5874-cf24-4952-aea0-31affedb7ff2)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.