CVE-2026-41567
Description
A flaw was found in Moby, the open-source container framework, and Docker Engine. A malicious container image can exploit this vulnerability to achieve arbitrary code execution with full daemon privileges, including host root access. This occurs when a user uploads a compressed archive to the container, as the daemon incorrectly uses decompression binaries from the container's filesystem. This allows an attacker to gain complete control over the affected system.
Statement
This is an Important vulnerability. A flaw in Moby and Docker Engine allows for arbitrary code execution with host root privileges. This occurs when a user uploads a compressed archive to a container, as the daemon incorrectly uses decompression binaries from the container's filesystem. This could lead to a complete compromise of the host system if a malicious container image is utilized.
Mitigation
To mitigate this issue, Red Hat recommends only running containers from trusted images. Additionally, users should avoid piping compressed archives into containers created from untrusted images. For environments utilizing authorization plugins, restricting access to the `PUT /containers/{id}/archive` endpoint can further reduce exposure.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 7.5 | N/A | 7.5 |
| Attack Vector | Local | N/A | Local |
| Attack Complexity | High | N/A | High |
| Privileges Required | Low | N/A | Low |
| User Interaction | Required | N/A | Required |
| Scope | Changed | N/A | Changed |
| Confidentiality | High | N/A | High |
| Integrity Impact | High | N/A | High |
| Availability Impact | High | N/A | High |
Vector
Red Hat: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
cve.org: CVSS:3.1/AV:L/AC:H/PR:L/UI:R/S:C/C:H/I:H/A:H
Understanding the Weakness (CWE)
Confidentiality,Integrity,Availability
Technical Impact: Execute Unauthorized Code or Commands
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