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

> CVE-2026-34040: Moby: AuthZ plugin bypass with oversized request body. CVSS 8.8 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2026-34040
Last updated: 2026-06-17T10:38:28Z

- Published: 2026-03-31 01:36 UTC · Updated: 2026-06-17 10:38 UTC · Assigner: GitHub\_M
- CVSS: 8.8 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- EPSS: 9.1%, 95th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-288

## 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.

## Affected vendors and products

- moby: moby

## Tracked companies

- [Docker](https://rewindex.com/company/docker.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2026-34040)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2026-34040)
- [https://github.com/moby/moby/releases/tag/docker-v29.3.1](https://github.com/moby/moby/releases/tag/docker-v29.3.1)
- [https://github.com/moby/moby/security/advisories/GHSA-x744-4wpc-v9h2](https://github.com/moby/moby/security/advisories/GHSA-x744-4wpc-v9h2)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2026-34040 · Markdown: https://rewindex.com/cve/CVE-2026-34040.md · JSON: https://rewindex.com/api/v1/cves/CVE-2026-34040 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T02:50:15.633Z