CVE-2026-103667 — Gitea container registry stored XSS through blob media type
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 restricti…
Published: 2026-10-06 · CVSS: 5.4 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7