CVE-2026-33997: medium-severity vulnerability in moby
Moby: Off-by-one error in plugin privilege validation
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.8epss 0.4%
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.
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Affected products
moby · mobyRelated CVEs — moby
In the same product, most dangerous first.
CVE-2024-41110CRITICALMoby authz zero length regressionEPSS 16.5%CVE-2026-34040HIGHMoby: AuthZ plugin bypass with oversized request bodyEPSS 9.3%CVE-2021-21285MEDIUMDocker daemon crash during image pull of malicious imageEPSS 3.3%CVE-2021-41091MEDIUMInsufficiently restricted permissions on data directory in Docker EngineEPSS 2.8%CVE-2023-28840HIGHmoby/moby's dockerd daemon encrypted overlay network may be unauthenticatedEPSS 2.6%CVE-2023-28842MEDIUMmoby/moby's dockerd daemon encrypted overlay network with a single endpoint is unauthenticatedEPSS 1.4%
References
https://access.redhat.com/errata/RHSA-2026:21769https://access.redhat.com/errata/RHSA-2026:22347https://access.redhat.com/errata/RHSA-2026:23345https://access.redhat.com/security/cve/CVE-2026-33997https://bugzilla.redhat.com/show_bug.cgi?id=2453277https://github.com/moby/moby/releases/tag/docker-v29.3.1https://github.com/moby/moby/security/advisories/GHSA-pxq6-2prw-chj9https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-33997.json