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CVE-2026-20912

9.1 · CRITICAL

Gitea does not properly validate repository ownership when linking attachments to releases.

Published Jan 22, 2026CWE-284EPSS 0.46%

Overview

CVE-2026-20912 is a critical-severity vulnerability. It was published on January 22, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refblog.gitea.com/release-of-1.25.4/GitHubgithub.com/go-gitea/gitea/pull/36320GitHubgithub.com/go-gitea/gitea/pull/36355GitHubgithub.com/go-gitea/gitea/releases/tag/v1.25.4GitHubgithub.com/go-gitea/gitea/security/advisories/GHSA-vfmv-f93v-37mwRefaccess.redhat.com/security/cve/CVE-2026-20912Refbugzilla.redhat.com/show_bug.cgi?id=2432219Refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-20912.json

How CyberStrike helps

Frequently asked questions

What is CVE-2026-20912?

CVE-2026-20912 is a critical-severity vulnerability. It was published on January 22, 2026 and has a CVSS 3.1 base score of 9.1 (CRITICAL).

How severe is CVE-2026-20912?

This vulnerability has a CVSS 3.1 base score of 9.1, rated CRITICAL. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-20912?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-20912?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-20912 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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