High 8.8Published Mar 30, 2026

CVE-2026-34040Moby: AuthZ plugin bypass with oversized request body

Updated under an hour ago (Oct 26, 2026, 6:30 PM ET)

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It affects moby and 1 other product. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Every CVE for moby

Exploited in the last 30 days

Moby is an open source container framework. Prior to version 29.3.1, a security vulnerability has been detected that allows attackers to bypass authorization plugins (AuthZ). This issue has been patched in version 29.3.1.

CVSS: 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weakness (CWE): CWE-288
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Apr 1, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

moby moby moby:moby (from the name)	before 29.3.1	CNA record
docker engine docker:engine	before 29.3.1	NVD

References

References

https://github.com/moby/moby/security/advisories/GHSA-x744-4wpc-v9h2	x-refsource-confirm, vendor-advisory
https://github.com/moby/moby/releases/tag/docker-v29.3.1	x-refsource-misc, release-notes

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.