CVE-2026-85620CWE-863broken-access-control

CVE-2026-85620

High · published September 4, 2026

CVSS v3.1
8.6
EPSS
1%
Percentile
42.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.6 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
CVSS v4.0
9.2 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N
EPSS
0.00506 · 42.3th percentile
Weakness
CWE-863 · Incorrect Authorization
Published
2026-09-04T19:17Z
References (4)
https://github.com/crystaldba/postgres-mcp · [email protected]https://github.com/crystaldba/postgres-mcp/blob/v0.3.0/src/postgres_mcp/sql/safe_sql.py · [email protected]https://github.com/crystaldba/postgres-mcp/issues/178 · [email protected]https://www.vulncheck.com/advisories/postgres-mcp-pro-0.3.0-restricted-mode-bypass-via-from-clause-function · [email protected]
EPSS history
Timeline
  • 06 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 04 SEP 14:32Z
    Postgres MCP Pro 0.3.0 Restricted-Mode Bypass via FROM-Clause Function
    cvelistv5