Vulnerability DatabaseCVE-2026-55887
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CVE-2026-55887
Published:June 18, 2026
Updated:August 27, 2026
A maliciously crafted OCI image label can inject arbitrary arguments into the "docker run" command line constructed by the MCP Gateway. An attacker who controls an image that the victim references via "docker://", or that the victim's catalog pulls a snapshot from, can mount the host filesystem, run as UID 0, and execute arbitrary code on the host.
Affected Packages
github.com/docker/mcp-gateway (GO):
Affected version(s) >=v0.21.0 <v0.42.2
Fix Suggestion:
Update to version v0.42.2
Related Resources (2)
https://github.com/docker/mcp-gateway
https://github.com/docker/mcp-gateway/security/advisories/GHSA-r2xf-7jw5-pjg6
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CVSS v4
Base Score:
8.7
Attack Vector
LOCAL
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
ACTIVE
Vulnerable System Confidentiality
HIGH
Vulnerable System Integrity
HIGH
Vulnerable System Availability
HIGH
Subsequent System Confidentiality
HIGH
Subsequent System Integrity
HIGH
Subsequent System Availability
HIGH
CVSS v3
Base Score:
8.6
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Weakness Type (CWE)
Improper Neutralization of Argument Delimiters in a Command ('Argument Injection')
CWE-88