medium6.8
CVE-2026-33997
Moby has an Off-by-one error in its plugin privilege validation
Impact
Moby is an open source container framework. Prior to version 29.3.1, a security vulnerability has been detected that allows plugins privilege validation to be bypassed during docker plugin install. Due to an error in the daemon's privilege comparison logic, the daemon may incorrectly accept a privilege set that differs from the one approved by the user. Plugins that request exactly one privilege are also affected, because no comparison is performed at all. This issue has been patched in version 29.3.1.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | github.com/docker/docker | < 29.3.1 | none recorded |
| go | github.com/moby/moby | < 29.3.1 | none recorded |
| go | github.com/moby/moby/v2 | < 2.0.0-beta.8 | 2.0.0-beta.8 |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Docker | Engine | before 29.3.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-pxq6-2prw-chj9
- https://github.com/moby/moby/security/advisories/GHSA-pxq6-2prw-chj9
- https://github.com/moby/moby/commit/f4d6f25bf0c3fa12d4968320a45685947756a22a
- https://docs.docker.com/engine/extend/legacy_plugins
- https://github.com/moby/moby/releases/tag/docker-v29.3.1
- https://nvd.nist.gov/vuln/detail/CVE-2026-33997
- https://access.redhat.com/errata/RHSA-2026:21769
- https://access.redhat.com/errata/RHSA-2026:22347
- https://access.redhat.com/errata/RHSA-2026:23345
- https://access.redhat.com/security/cve/CVE-2026-33997
- https://bugzilla.redhat.com/show_bug.cgi?id=2453277
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33997.json