CVE-2026-39884 - Vulnerability Analysis
HighCVSS: 8.3Last Updated: April 15, 2026
mcp-server-kubernetes - Command Injection
Published: April 15, 2026Updated: April 15, 2026Remote Exploitable
Overview
mcp-server-kubernetes <= 3.4.0 contains a command injection caused by unsafe string concatenation of user-controlled input in port_forward tool, letting attackers inject arbitrary kubectl flags to expose internal services and cross namespaces, exploit requires attacker to control input fields.
Severity & Score
Severity: High
CVSS Score: 8.3
Impact
Attackers can inject arbitrary kubectl flags to expose internal services and perform cross-namespace actions, potentially compromising cluster security.
Mitigation
Update to version 3.5.0 or later.
References
Related Resources
Details
- CVE ID
- CVE-2026-39884
- Severity
- High
- CVSS Score
- 8.3
- Type
- command_injection
- Status
- new
CWE
- CWE-88
CVSS Metrics
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L