CVE-2026-85620 (GCVE-0-2026-85620)
Vulnerability from cvelistv5 – Published: 2026-09-04 14:32 – Updated: 2026-09-14 19:33
VLAI
EPSS
VEX
Title
Postgres MCP Pro 0.3.0 Restricted-Mode Bypass via FROM-Clause Function
Summary
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
8.6 (High)
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-09-14 19:19 UTC
CWE
- CWE-863 - Incorrect Authorization
Assigner
VulnCheck
CNA
References
4 references
| URL | Tags |
|---|---|
| https://github.com/crystaldba/postgres-mcp/issues/178 | issue-tracking |
| https://github.com/crystaldba/postgres-mcp | product |
| https://github.com/crystaldba/postgres-mcp/blob/v… | technical-description |
| https://www.vulncheck.com/advisories/postgres-mcp… | third-party-advisory |
Impacted products
1 product
| Vendor | Product | Version | |
|---|---|---|---|
| crystaldba | postgres-mcp |
Affected:
0 , ≤ 0.3.0
(semver)
|
Date Public
2026-06-06 00:00
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Nomenclature
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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