CVSS 3.1
7.2 highCVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:NCVE-2026-41567
High (7.2). EPSS 0.2% chance of exploitation in the next 30 days. Fixed in github.com/moby/moby/v2 2.0.0-beta.14.
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` endpoint, and avoiding piping compressed archives into containers created from untrusted images
Severity
- EPSS
- 0.2% chance of exploitation in the next 30 days; higher than 4% of CVEs (scores of 2026-10-31)
- CWE
- CWE-427
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-x86f-5xw2-fm2r | Go | github.com/moby/moby/v2 | <2.0.0-beta.14 | 2.0.0-beta.14 |
| GHSA-x86f-5xw2-fm2r | Go | github.com/docker/docker | <=28.5.2 | no fix published |
| GHSA-x86f-5xw2-fm2r | Go | github.com/moby/moby | <=28.5.2 | no fix published |
| GO-2026-5746 | Go | github.com/docker/docker | all versions | no fix published |
| GO-2026-5746 | Go | github.com/moby/moby | all versions | no fix published |
| GO-2026-5746 | Go | github.com/moby/moby/v2 | <2.0.0-beta.14 | 2.0.0-beta.14 |