CVE-2026-33997

Summary

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 Software

Weaknesses

• CWE-193: CWE-193: Off-by-one Error

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: total

moby: docker: github.com/moby/moby: Moby: Privilege validation bypass during plugin installation

Additional References

• 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
• https://access.redhat.com/errata/RHSA-2026:22347
• https://access.redhat.com/errata/RHSA-2026:21769
• https://access.redhat.com/errata/RHSA-2026:23345

References

• https://github.com/moby/moby/security/advisories/GHSA-pxq6-2prw-chj9
• https://github.com/moby/moby/releases/tag/docker-v29.3.1

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