CVE-2026-34040
Moby has AuthZ plugin bypass when provided oversized request bodies in github.com/docker/docker
8.8
HIGH
CVSS 3.1
EPSS 0.01%
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.
How to fix CVE-2026-34040
To remediate CVE-2026-34040, upgrade the affected package to a fixed version below.
- —no fix listed
- —upgrade to 29.3.1 or later
- —no fix listed
- —no fix listed
- —upgrade to 29.3.1 or later
- —upgrade to 2.0.0-beta.8 or later
- —upgrade to 2.0.0-beta.8 or later
Is CVE-2026-34040 being exploited?
Low — EPSS is 0.0%, meaning exploitation activity has not been observed at scale.
Affected packages (7)
- from 0
- from 0, < 29.3.1
- from 0
- from 0
- from 0, < 29.3.1
- from 0, < 2.0.0-beta.8
- from 0, < 2.0.0-beta.8
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH8.8 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |