Review reviewCritical

CVE-2026-20912

Gitea Gitea Open Source Git Server, OpenShift Pipelines, gitea

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.

CVSS
9.1
EPSS
0.41%
34.2% percentile
CISA KEV
Not listed
Published
2026.01.23
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.41%
Technical severityCVSS 9.1

Vulnerability overview

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.

Affected product and versions

Product
Gitea Gitea Open Source Git Server, OpenShift Pipelines, gitea
Affected versions
<= 1.25.3, < 1.25.4
Fixed versions
1.25.4

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that Gitea Gitea Open Source Git Server, OpenShift Pipelines, gitea and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE
CWE-283, CWE-284, CWE-639
CVE-2026-20912 — Gitea Gitea Open Source Git Server, OpenShift Pipelines, gitea | SECUFOCUS NOW