CVE-2026-117685 Details
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.
A vulnerability in Gitea's OCI registry handling allows public-only tokens with write permissions to mount private blobs into public packages. The issue arises because the source blob's access is checked against the token owner's full account permissions, rather than the token's public-only restriction. As a result, a token owner who can read a private package and write to a public namespace can inadvertently expose private data, such as container layers, through public package URLs.
Users are advised to upgrade to Gitea version 28.3.0, where this vulnerability has been fixed.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Nov 1, 2026CISA-ADP
Assessed Nov 6, 2026References to Advisories, Solutions, and Tools
By selecting these links, you will be leaving this site. These are references gathered from the official CVE record and are not endorsed by Volerion.
| URL | Source(s) | Tag(s) |
|---|---|---|
| https://blog.gitea.com/release-of-28.3.0/ | Gitea Limited | Release NotesVendor |
| https://github.com/go-gitea/gitea/pull/39690 | Gitea Limited | Issue TrackingVendor |
| https://github.com/go-gitea/gitea/pull/39853 | Gitea Limited | Issue TrackingVendor |
| https://github.com/go-gitea/gitea/releases/tag/v28.3.0 | Gitea Limited | Release NotesVendor |
| https://github.com/go-gitea/gitea/security/advisories/GHSA-8g99-g36h-5p2w | Gitea Limited | AdvisoryRemedyVendor |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | Gitea Limited |
Affected Products
| Product | Versions |
|---|---|
| Gitea | <= 28.2.0 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Nov 6, 2026 | CVE Modified | CISA-ADP |
| Nov 1, 2026 | New CVE Received | Gitea Limited |