Answer in brief
CVE-2026-34040 records a High severity (CVSS 8.8) vulnerability in Moby has AuthZ plugin bypass when provided oversized request bodies. The current sources do not mark it as known exploited. The current feed maps github.com/docker/docker (go), github.com/moby/moby (go), github.com/moby/moby (go), github.com/moby/moby/v2 (go) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 8.8. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps github.com/docker/docker (go), github.com/moby/moby (go), github.com/moby/moby (go), github.com/moby/moby/v2 (go) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| github.com/docker/dockergo | >=0 <29.3.1 | 29.3.1 |
| github.com/moby/mobygo | >=0 <29.3.1 | 29.3.1 |
| github.com/moby/mobygo | <29.3.1 | 29.3.1 |
| github.com/moby/moby/v2go | >=0 <2.0.0-beta.8 | 2.0.0-beta.8 |
| github.com/moby/moby/v2go | <2.0.0-beta.8 | 2.0.0-beta.8 |
Published upstream
Mar 27, 2026
Evidence: source:ghsa:source_dates:source-dates:recordSource modified
Aug 24, 2026
Evidence: source:ghsa:source_dates:source-dates:recordFirst seen by HOL
Aug 7, 2026
## 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 ([email protected]) - Asim Viladi Oglu Manizada (@manizada) ## Resources - [CVE-2024-41110 / GHSA-v23v-6jw2-98fq](https://github.com/moby/moby/security/advisories/GHSA-v23v-6jw2-98fq)
Quoted source text, attributed separately from HOL analysis.