CVE-2026-85620

9.2 criticalEPSS 0.5%

Critical (9.2). EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 4.0

9.2 critical

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

CVSS 3.1

8.6 high

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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 43% of CVEs (scores of 2026-10-31)
CWE: CWE-863
Published: 2026-09-04
Modified: 2026-09-24
Record from: the NVD, synced 2026-10-19

References

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

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