CVE-2026-34040
highpriority · track · 44OT risk · elevatedEPSS 0.091 · 95 %ileexploit · PoCDEEURUUSEPSS · scored 2026-10-27
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
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
A stakeholder decision — act, attend, or track — from exploitation and impact.
weaknesses
The CWE weakness classes this flaw belongs to.
exploits (1)
Public proof-of-concept and weaponised exploit code.
- m0nk3ygod/CVE-2026-34040-PoCm0nk3ygod/CVE-2026-34040-PoCPoC · poc_in_github
affected products (25)
Products and version ranges known to be affected.
- Red Hat OpenShift API for Data Protectionall versionscert_bundDEcpe:/a:redhat:openshift:api_for_data_protection
advisories (3)
Vendor and ecosystem advisories describing this.
- WID-SEC-W-2026-0873docker: Mehrere SchwachstellenDeutsch2026-03-25csaf · cert_bundDE
Ein lokaler Angreifer kann mehrere Schwachstellen in docker ausnutzen, um Sicherheitsvorkehrungen zu umgehen und Informationen offenzulegen.
- GHSA-x744-4wpc-v9h2Moby has AuthZ plugin bypass when provided oversized request bodies2026-03-27ghsa · osvUS
## Summary A security vulnerability has been detected that allows attackers to bypass [authorization plugins (AuthZ)](https://docs.docker.com/engine/extend/plugins_authorization/) under specific circumstances. The base likelihood of this being exploited is low. This is an incomplete fix for [CVE-2024-41110](https://github.com/moby/moby/security/advisories/GHSA-v23v-6jw2-98fq). ## Impact **If you don't use AuthZ plugins, you are not affected.** Using a specially-crafted API request, an attacker could make the Docker daemon forward the request to an authorization plugin without the body. The authorization plugin may allow a request which it would have otherwise denied if the body had been forwarded to it. Anyone who depends on authorization plugins that introspect the request body to make access control decisions is potentially impacted. ## Workarounds If unable to update immediately: - Avoid using AuthZ plugins that rely on request body inspection for security decisions. - Restrict access to the Docker API to trusted parties, following the principle of least privilege. ## Credits - 1seal / Oleh Konko ([@1seal](https://github.com/1seal)) - Cody (c@wormhole.guru) - Asim Viladi Oglu Manizada (@manizada) ## Resources - [CVE-2024-41110 / GHSA-v23v-6jw2-98fq](https://github.com/moby/moby/security/advisories/GHSA-v23v-6jw2-98fq)
- GO-2026-4887Moby has AuthZ plugin bypass when provided oversized request bodies in github.com/docker/docker2026-04-02vendor · osvUS
Moby has AuthZ plugin bypass when provided oversized request bodies in github.com/docker/docker
also known as (7)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://github.com/moby/moby/releasesPatchcnnvd
- https://github.com/moby/moby/releases/tag/docker-v29.3.1cnnvd
- https://github.com/moby/moby/security/advisories/GHSA-x744-4wpc-v9h2cnnvd
- https://vigilance.fr/vulnerability/Docker-Moby-user-access-via-AuthZ-Plugin-Bypass-50202cnnvd
- https://github.com/moby/moby/releases/tag/docker-v29.3.1enisa_euvd
- https://github.com/moby/moby/security/advisories/GHSA-x744-4wpc-v9h2enisa_euvd
- https://github.com/moby/moby/releases/tag/docker-v29.3.1Release Notesnvd
- https://github.com/moby/moby/security/advisories/GHSA-x744-4wpc-v9h2Vendor Advisorynvd
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