Description
The OCI registry's cross-repository blob mount checked the target package against the token's `public-only` restriction, but checked the source blob only against the full account permissions of the token owner. A `public-only` token with `write:package` scope, whose owner can read a private package and write to a public package namespace, could mount a blob of the private package into the public package. The private blob, such as a container layer, could then be downloaded by anyone through the public package.
References
- https://blog.gitea.com/release-of-28.3.0/
- https://github.com/go-gitea/gitea/pull/39690
- https://github.com/go-gitea/gitea/pull/39853
- https://github.com/go-gitea/gitea/releases/tag/v28.3.0
- https://github.com/go-gitea/gitea/security/advisories/GHSA-8g99-g36h-5p2w
Collected automatically from public sources. Verify affected versions and fixes in the vendor's notice before acting.