CVE-2026-103667

UNKNOWN 0.0

Gitea container registry stored XSS through blob media type

CVSS Score

0.0

EPSS Score

0.0%

EPSS Percentile

0th

Gitea's container registry served blob downloads with a `Content-Type` taken from the media type declared in pushed image manifests, without a `Content-Disposition` or restrictive content security policy. A user who can push container images can publish a blob containing HTML and JavaScript with a `text/html` media type. When a victim who is authenticated to the instance opens the blob URL in a browser, the script runs on the Gitea origin and can perform actions as the victim, such as creating API tokens.

CWE	CWE-79
Vendor	gitea
Product	gitea
Published	Oct 6, 2026

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Affected Versions

Gitea / Gitea

0 ≤ 1.27.3

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/go-gitea/gitea/security/advisories/GHSA-7cq7-4v93-8wjm github.com: https://github.com/go-gitea/gitea/pull/39398 blog.gitea.com: https://blog.gitea.com/release-of-28.0.0/ github.com: https://github.com/go-gitea/gitea/releases/tag/v28.0.0

Credits

🔍 https://github.com/parameter-ai-security https://github.com/wxiaoguang