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Vulnerabilities

Security incident · CVE-2026-113429

Gitea stored XSS through legacy Actions artifact Content-Encoding

Published Nov 1, 2026 · catalog updated Nov 1, 2026 · Gitea Gitea

Last checked Nov 8, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-113429. EPSS is 0.17%. Act only if a listed version of Gitea Gitea is installed.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Unknown—
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.17%
Remediation
Advisory link
Affected products
vendor Gitea Gitea

Legacy (v1 to v3) Actions artifact uploads stored the request's header unchecked in the column that is served as the artifact's on download, and a value starting with or 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 marker, and the special serve headers are chosen only for valid media types.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Gitea Giteaversion unspecified

How to fix CVE-2026-113429

  • No stored fix

    No vendor fix text is stored. Use the linked advisory before you change production.

  • Version check

    No version range is stored, so an installed version cannot be checked on this page.

  • Advisory

    Open the cve_org record and follow its fix.

  • Official advisories

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-113429. EPSS is 0.17%. Act only if a listed version of Gitea Gitea is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.17%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 1, 2026 · NIST NVD

    Detected

    Legacy (v1 to v3) Actions artifact uploads stored the request's header unchecked in the column that is served as the artifact's on download, and a value starting with or 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 rea

  2. Nov 1, 2026 · NIST NVD

    Updated

    Legacy (v1 to v3) Actions artifact uploads stored the request's header unchecked in the column that is served as the artifact's on download, and a value starting with or 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 rea

Sources

  • CVE.orgVulnerability recordCVE-2026-113429

    Legacy (v1 to v3) Actions artifact uploads stored the request's header unchecked in the column that is served as the artifact's on download, and a value starting with or also removed the sandboxing Content-Security-Policy. A user who can run an Actions job could upload an artifac

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-113429

    30-day exploitation probability 0.17%

    first.org
  • NIST NVDVulnerability recordCVE-2026-113429

    Legacy (v1 to v3) Actions artifact uploads stored the request's header unchecked in the column that is served as the artifact's on download, and a value starting with or also removed the sandboxing Content-Security-Policy. A use

    nvd.nist.gov

References

Freshness

Last verified in this catalog Nov 8, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 8, 2026
  • CVE.orgNov 2, 2026
  • NIST NVDNov 1, 2026