CVE-2026-103667
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.
Does this matter?
Lower severity and a low EPSS score (0.19%). Track it; it rarely justifies an emergency change on its own.
Description
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.
- CVSS 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
- EPSS
- 0.19% probability · 9th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-79
- Affected
- gitea/gitea
- Source
- 88ee5874-cf24-4952-aea0-31affedb7ff2
EPSS moved from 0.2% on 7 October 2026 to 0.2% on 26 October 2026.
References
- https://blog.gitea.com/release-of-28.0.0/Release Notes
- https://github.com/go-gitea/gitea/pull/39398Patch, Issue Tracking
- https://github.com/go-gitea/gitea/releases/tag/v28.0.0Release Notes
- https://github.com/go-gitea/gitea/security/advisories/GHSA-7cq7-4v93-8wjmMitigation, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.