{"id":"CVE-2026-87911","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-87911","summary":"An OS command injection weakness in the read-only enforcement of the SQL validation component in Amazon awslabs postgres-mcp-server before 1.1.7 might allow an unauthenticated actor…","details":"An OS command injection weakness in the read-only enforcement of the SQL validation component in Amazon awslabs postgres-mcp-server before 1.1.7 might allow an unauthenticated actor to execute operating system commands on the host of a self-managed PostgreSQL server by placing a crafted COPY ... TO PROGRAM statement into content that is processed when an authenticated user interacts with the MCP server in its default read-only mode.\n\n\n\nTo remediate this issue, users should upgrade to version 1.1.7 or later.","published":"2026-09-09T20:21:02.017","modified":"2026-09-09T20:21:02.017","cvss":{"score":9.6,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://aws.amazon.com/security/security-bulletins/2026-104-aws/"},{"type":"WEB","url":"https://github.com/awslabs/mcp/security/advisories/GHSA-fph8-pg5w-78fv"},{"type":"WEB","url":"https://pypi.org/project/awslabs.postgres-mcp-server/1.1.7/"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-09-09T20:21:02.017"}}