CVE-2026-20912

Name: CVE-2026-20912
Creator: NVD / NIST
Published: 2026-01-22T22:16:19.297+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.1/10EPSS 0.37%

Last modified Jun 17, 2026

CVE-2026-20912 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. EPSS estimates a 0.37% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.1/10

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

EPSS Probability

0.37%

28.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Gitea	Gitea	< 1.25.4

References

https://blog.gitea.com/release-of-1.25.4/Release Notes
https://github.com/go-gitea/gitea/pull/36320Issue Tracking, Patch
https://github.com/go-gitea/gitea/pull/36355Issue Tracking, Patch
https://github.com/go-gitea/gitea/releases/tag/v1.25.4Release Notes
https://github.com/go-gitea/gitea/security/advisories/GHSA-vfmv-f93v-37mwBroken Link

Timeline

Published: Jan 22, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-20912?

How severe is CVE-2026-20912?

CVE-2026-20912 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.37% probability of exploitation in the next 30 days.

How do I fix CVE-2026-20912?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-20912?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST