CVE-2026-85620

HIGH 8.6

Postgres MCP Pro 0.3.0 Restricted-Mode Bypass via FROM-Clause Function

CVSS Score

8.6

EPSS Score

0.0%

EPSS Percentile

0th

Postgres MCP Pro 0.3.0 contains a restricted-mode bypass vulnerability where function-name validation is not applied to RangeFunction nodes in FROM clauses. Attackers can execute file-reading functions like pg_read_file through FROM-clause syntax to read arbitrary files despite restricted-mode protections.

CWE	CWE-863
Vendor	crystaldba
Product	postgres-mcp
Published	Sep 4, 2026
Last Updated	Sep 14, 2026

Stay Ahead of the Next One

Get instant alerts for crystaldba postgres-mcp

Be the first to know when new high vulnerabilities affecting crystaldba postgres-mcp are published — delivered to Slack, Telegram or Discord.

Get Free Alerts → Free · No credit card · 60 sec setup

CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

crystaldba / postgres-mcp

0 ≤ 0.3.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/crystaldba/postgres-mcp/issues/178 github.com: https://github.com/crystaldba/postgres-mcp github.com: https://github.com/crystaldba/postgres-mcp/blob/v0.3.0/src/postgres_mcp/sql/safe_sql.py vulncheck.com: https://www.vulncheck.com/advisories/postgres-mcp-pro-0.3.0-restricted-mode-bypass-via-from-clause-function

Credits

George Chen