CVE Catalog

CVE-2026-113429

Low risk· EPSS 14%
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Low risk
0.23%

14th percentile - higher than 14% of all known CVEs

Summary

Legacy (v1 to v3) Actions artifact uploads stored the request's `Content-Encoding` header unchecked in the column served as the artifact's `Content-Type` on download, and a value starting with `video/` or `audio/` also removed the sandboxing Content-Security-Policy. A user who can run an Actions job could upload an artifact that a browser renders as HTML on the Gitea origin when the direct artifact download URL is opened, and the URL is reachable anonymously on public repositories.

Risk Assessment

A malicious script may execute in the victim's session, and for an administrator this means control of the instance.

Recommendation

Update Gitea to a version storing only the `gzip` marker and choosing serve headers only for valid media types.

Other vulnerabilities in Gitea

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Original NVD description (English source)

Legacy (v1 to v3) Actions artifact uploads stored the request's `Content-Encoding` header unchecked in the column that is served as the artifact's `Content-Type` on download, and a value starting with `video/` or `audio/` also removed the sandboxing Content-Security-Policy. A user who can run an Actions job could upload an artifact that a browser renders as HTML on the Gitea origin when the direct artifact download URL is opened, and the URL is reachable anonymously on public repositories. A victim who opens the link runs the attacker's script with their own session, which for an administrator means control of the instance. Legacy uploads now store only the `gzip` marker, and the special serve headers are chosen only for valid media types.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS