Improper Neutralization of Argument Delimiters in a Command in MCP Gateway - CVE-2026-55887
Published: June 25, 2026
Vulnerability identifier: #VU135199
CSH Severity: High
CVSS v4: 7.1 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-55887
CWE-ID: CWE-88
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to the argument injection within the handling of the io.docker.server.metadata OCI image label. A remote attacker can trick a victim to reference a malicious Docker image and execute arbitrary code on the target system.
Affected software
MCP Gateway
How to mitigate CVE-2026-55887
Install updates from vendor's website.
MCP Gateway - update to 0.42.2