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HIGHpublic exploit

CVE-2026-41567

CVE-2026-41567 — Docker: `PUT /containers/{id}/archive` executes container binary on the host

Moby is an open source container framework. In versions prior to 29.5.1 and in moby/moby v2 prior to v2.0.0-beta.14, when a compressed archive is uploaded to a container via `PUT /containers/{id}/archive` or piped through `docker cp -`, the daemon resolves decompression binaries (such as `xz` or `unpigz`) from the container's filesystem rather than the host's due to incorrect ordering of operations. A malicious container image containing a trojanized decompression binary can achieve arbitrary code execution with full daemon privileges, including host root UID and unrestricted capabilities, when a user uploads a compressed (xz or gzip) archive into that container. This issue is fixed in Docker Engine 29.5.1 and moby/moby v2.0.0-beta.14. Workarounds include only running containers from trusted images, using authorization plugins to restrict access to the `PUT /containers/{id}/archive`…

Published Updated Sources: cvelistV5, GitHub_M

Triage

Is it exploited, how likely is exploitation, what does it touch, and how severe do the scoring sources call it.

Exploitation

Exploit code

public exploit, none observed

EPSS

0%

chance of exploitation in 30 days

Affects

moby

22 products listed

CVSS base

7.2

HIGH

CISA SSVC assessment

Three decision points CISA publishes for the CVEs it assesses · SSVC 2.0.3. A stakeholder decision, not a severity score.

CISA

Exploitation

None

none · proof-of-concept · active

Automatable

No

can an attacker script all four kill-chain steps

Technical impact

Total

partial · total control of the vulnerable component

Affected scope

The catalog records vendors and products as separate lists, not pairs, so which product belongs to which vendor is not something this page can say.

Vendors (3)

mobydockerredhat

Products (22)

moby v2 daemondocker enginedocker daemonmulticluster global hub 1 4 5multicluster global hub 1 6 5openshift developer tools and services 1 6 3red hat multicluster global hub 1 5 3red hat openshift data foundation 4 22exploit intelligencemulticluster engine for kubernetesopenshift lightspeedred hat advanced cluster management for kubernetes 2red hat ceph storage 5red hat ceph storage 7red hat ceph storage 8red hat ceph storage 9red hat enterprise linux 10red hat enterprise linux 9red hat hardened imagesred hat openshift ai rhoaired hat openshift container platform 4red hat openshift distributed tracing 3

Every base score collected

Sources score independently and disagree; each row says who scored it and under which version.

ScoreVersionSeverityExpl.ImpactSource
7.2CVSS 3.1HIGH——cvelistV5

Weakness & attack patterns

  • CWE-427

Attack patterns reported against this CVE. The ATT&CK techniques below are inferred from its weakness class.

  • T1574.007Hijack Execution Flow: Path Interception by PATH Environment Variable
  • T1574.009Hijack Execution Flow: Path Interception by Unquoted Path
  • T1574.001Hijack Execution Flow: DLL search order hijacking

Public exploit

Capability, not use: code existing is a different claim from anyone running it.

Indexed by

poc in github

Detection

Read off the CVSS vector and the weakness class. Starting points, not rules we have tested.

  • Search application, proxy, and WAF logs for requests touching /moby, /containers/, /archive.

References

9 on the record

Elsewhere on this site

  • mobyevery CVE for this vendor
  • dockerevery CVE for this vendor
  • redhatevery CVE for this vendor
  • CWE-427other pages naming this weakness

Not in any source we poll

Listed rather than left blank: an empty field and an unmeasured one look identical on screen, and only one is a reason to look elsewhere.

  • No confirmed IOCs, IP addresses, domains, file hashes, or malware artifacts supplied.
  • No organization-specific asset inventory, compensating-control status, or patch deployment evidence supplied.
  • No exploit packet captures, log samples, or incident case IDs supplied.