CVE-2026-117685

critical

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://github.com/go-gitea/gitea/security/advisories/GHSA-8g99-g36h-5p2w

https://github.com/go-gitea/gitea/releases/tag/v28.3.0

https://github.com/go-gitea/gitea/pull/39853

https://github.com/go-gitea/gitea/pull/39690

https://blog.gitea.com/release-of-28.3.0/

Details

Source: Mitre, NVD

Published: 2026-11-01

Updated: 2026-11-01

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 9.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Severity: Critical

EPSS

EPSS: 0.00198