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.
Metrics
Affected Vendors & Products
References
History
Thu, 15 Oct 2026 02:45:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| CPEs | cpe:2.3:a:gitea:gitea:*:*:*:*:*:*:*:* |
Wed, 07 Oct 2026 21:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
cvssV3_1
|
Tue, 06 Oct 2026 23:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Gitea
Gitea gitea |
|
| Vendors & Products |
Gitea
Gitea gitea |
Tue, 06 Oct 2026 19:30:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| 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. | |
| Title | Gitea container registry stored XSS through blob media type | |
| Weaknesses | CWE-79 | |
| References |
|
Status: PUBLISHED
Assigner: Gitea
Published: 2026-10-06T19:23:34.873Z
Updated: 2026-10-07T20:17:12.875Z
Reserved: 2026-10-04T21:57:35.562Z
Link: CVE-2026-103667
Updated: 2026-10-07T20:17:08.883Z
Status : Analyzed
Published: 2026-10-06T20:17:14.607
Modified: 2026-10-15T02:25:29.217
Link: CVE-2026-103667
No data.