CVE-2026-103667: Gitea

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• Gitea Gitea: up to and including 1.27.3

Published 2026-10-06. Last modified 2026-10-07.