CVE-2026-87911

CRITICAL 9.6CVE-2026-87911 · Published 09/09/2026 · updated 10/09/2026

In short

CVE-2026-87911 is a CRITICAL (CVSS 9.6) vulnerability.
Chance of exploitation in the next 30 days (EPSS): 1.7%, higher than 77.7% of all vulnerabilities.
No patched version is listed yet: follow the vendor's advisory in References.

Package	Affected versions	Patched versions
—	No affected product versions are listed for this vulnerability yet.

Description

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. To remediate this issue, users should upgrade to version 1.1.7 or later.

References

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