CVE-2026-34040

Name: CVE-2026-34040
Creator: NVD / NIST
Published: 2026-03-31T03:15:57.883+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 8.12%

Last modified Jun 17, 2026

CVE-2026-34040 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. 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). EPSS estimates a 8.12% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

7.8/10

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

8.12%

94.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-288

Affected Software

Vendor	Product	Versions
Docker	Engine	< 29.3.1

References

https://github.com/moby/moby/releases/tag/docker-v29.3.1Release Notes
https://github.com/moby/moby/security/advisories/GHSA-x744-4wpc-v9h2Vendor Advisory

Timeline

Published: Mar 31, 2026
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2026-34040?

How severe is CVE-2026-34040?

CVE-2026-34040 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 8.12% probability of exploitation in the next 30 days.

How do I fix CVE-2026-34040?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-34040?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST