CVE-2026-4270
AWS API MCP File Access Restriction Bypass
Vexday Risk Score
13Bajo
Decisión SSVC (CISA)
Track
Sin señal de explotación → monitorear
CVSS 6.8EPSS 0.1%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Ciclo de vida
16 mar 2026Publicada en NVD
Recomendación: Monitorear — sin señal de explotación por ahora.
Improper Protection of Alternate Path exists in the no-access and workdir feature of the AWS API MCP Server versions >= 0.2.14 and < 1.3.9 on all platforms may allow the bypass of intended file access restriction and expose arbitrary local file contents in the MCP client application context.
To remediate this issue, users should upgrade to version 1.3.9.
CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Productos afectados
AWS · AWS API MCP Server¿Quieres saber si tu infraestructura está expuesta a esto?
Hablar con TrueHacking →