CVE-2026-85620

HIGHPre-NVD 8.68.6—
EchelonGraph scoreHIGH confidence

Score 8.6 from GitHub Security Advisory (severity: CRITICAL) published 2026-09-04. a secondary CVSS source baseline 8.6; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this week
8.6EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 8.6Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
8.6
EG Score
8.6(high)
EG Risk
54(Track)
EG Risk 54/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity86% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
41%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 24, 2026

Advisory Details (4)

Auto-updated Sep 4, 2026
No patch confirmed yet.
generic

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

https://www.vulncheck.com/advisories/postgres-mcp-pro-0.3.0-restricted-mode-bypass-via-from-clause-function
generic

postgres-mcp/src/postgres_mcp/sql/safe_sql.py at v0.3.0 · crystaldba/postgres-mcp · GitHub

https://github.com/crystaldba/postgres-mcp/blob/v0.3.0/src/postgres_mcp/sql/safe_sql.py
generic

GitHub - crystaldba/postgres-mcp: Postgres MCP Pro provides configurable read/write access and performance analysis for you and your AI agents. · GitHub

https://github.com/crystaldba/postgres-mcp
generic

[Security] Restricted (read-only) mode bypass: arbitrary server-side file read via FROM-clause function · Issue #178 · crystaldba/postgres-mcp · GitHub

https://github.com/crystaldba/postgres-mcp/issues/178

Vendor Advisories for CVE-2026-85620(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 28× in last 7d / 87× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-25 08:41 UTCGHSA enrichment
  2. 2026-09-24 21:13 UTCGHSA enrichment
  3. 2026-09-24 14:23 UTCEG score recompute
  4. 2026-09-24 14:23 UTCGHSA enrichment
  5. 2026-09-24 14:04 UTCEPSS rescore
  6. 2026-09-24 02:36 UTCEG score recompute
  7. 2026-09-24 02:36 UTCGHSA enrichment
  8. 2026-09-23 17:54 UTCEPSS rescore
  9. 2026-09-23 15:08 UTCGHSA enrichment
  10. 2026-09-23 03:40 UTCGHSA enrichment
  11. 2026-09-22 16:12 UTCEG score recompute
  12. 2026-09-22 16:11 UTCGHSA enrichment
  13. 2026-09-22 16:01 UTCEPSS rescore
  14. 2026-09-22 04:38 UTCEG score recompute
  15. 2026-09-22 04:38 UTCGHSA enrichment
  16. 2026-09-21 21:09 UTCEPSS rescore
  17. 2026-09-21 17:09 UTCGHSA enrichment
  18. 2026-09-21 05:07 UTCEG score recompute
  19. 2026-09-21 05:07 UTCGHSA enrichment
  20. 2026-09-20 20:16 UTCEPSS rescore
  21. 2026-09-20 17:15 UTCGHSA enrichment
  22. 2026-09-20 05:47 UTCGHSA enrichment
  23. 2026-09-19 18:19 UTCEG score recompute
  24. 2026-09-19 18:19 UTCGHSA enrichment
  25. 2026-09-19 06:51 UTCEG score recompute
Show 62 more
  1. 2026-09-19 06:51 UTCGHSA enrichment
  2. 2026-09-18 19:28 UTCEPSS rescore
  3. 2026-09-18 19:21 UTCGHSA enrichment
  4. 2026-09-18 07:52 UTCGHSA enrichment
  5. 2026-09-17 20:24 UTCEG score recompute
  6. 2026-09-17 20:24 UTCGHSA enrichment
  7. 2026-09-17 19:32 UTCEPSS rescore
  8. 2026-09-17 05:59 UTCGHSA enrichment
  9. 2026-09-16 18:28 UTCEG score recompute
  10. 2026-09-16 18:28 UTCGHSA enrichment
  11. 2026-09-16 14:09 UTCEPSS rescore
  12. 2026-09-16 06:50 UTCEG score recompute
  13. 2026-09-16 06:50 UTCGHSA enrichment
  14. 2026-09-16 05:15 UTCEPSS rescore
  15. 2026-09-15 19:23 UTCGHSA enrichment
  16. 2026-09-15 07:55 UTCEG score recompute
  17. 2026-09-15 07:55 UTCGHSA enrichment
  18. 2026-09-15 03:12 UTCEPSS rescore
  19. 2026-09-15 03:12 UTCEPSS rescore
  20. 2026-09-14 20:27 UTCEG score recompute
  21. 2026-09-14 20:27 UTCGHSA enrichment
  22. 2026-09-14 19:40 UTCEG score recompute
  23. 2026-09-14 19:40 UTCGHSA enrichment
  24. 2026-09-14 18:22 UTCGHSA enrichment
  25. 2026-09-14 06:47 UTCGHSA enrichment
  26. 2026-09-13 19:20 UTCEG score recompute
  27. 2026-09-13 19:20 UTCGHSA enrichment
  28. 2026-09-13 07:51 UTCGHSA enrichment
  29. 2026-09-12 20:24 UTCEG score recompute
  30. 2026-09-12 20:24 UTCGHSA enrichment
  31. 2026-09-12 08:55 UTCGHSA enrichment
  32. 2026-09-11 21:28 UTCEG score recompute
  33. 2026-09-11 21:28 UTCGHSA enrichment
  34. 2026-09-11 14:53 UTCEPSS rescore
  35. 2026-09-11 14:53 UTCEPSS rescore
  36. 2026-09-11 10:00 UTCEG score recompute
  37. 2026-09-11 10:00 UTCGHSA enrichment
  38. 2026-09-10 22:29 UTCGHSA enrichment
  39. 2026-09-10 11:01 UTCEG score recompute
  40. 2026-09-10 11:01 UTCGHSA enrichment
  41. 2026-09-09 23:23 UTCGHSA enrichment
  42. 2026-09-09 10:33 UTCGHSA enrichment
  43. 2026-09-08 23:05 UTCEG score recompute
  44. 2026-09-08 23:05 UTCGHSA enrichment
  45. 2026-09-08 22:01 UTCEPSS rescore
  46. 2026-09-08 11:19 UTCGHSA enrichment
  47. 2026-09-07 23:49 UTCEG score recompute
  48. 2026-09-07 23:49 UTCGHSA enrichment
  49. 2026-09-07 12:21 UTCGHSA enrichment
  50. 2026-09-07 00:50 UTCEG score recompute
  51. 2026-09-07 00:50 UTCGHSA enrichment
  52. 2026-09-06 13:48 UTCEPSS rescore
  53. 2026-09-06 13:19 UTCGHSA enrichment
  54. 2026-09-06 01:51 UTCEG score recompute
  55. 2026-09-06 01:51 UTCGHSA enrichment
  56. 2026-09-05 15:31 UTCEPSS rescore
  57. 2026-09-05 14:23 UTCGHSA enrichment
  58. 2026-09-05 02:55 UTCEG score recompute
  59. 2026-09-05 02:54 UTCGHSA enrichment
  60. 2026-09-04 15:25 UTCEG score recompute
  61. 2026-09-04 14:46 UTCEG score recompute
  62. 2026-09-04 14:44 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-85620?
CVE-2026-85620 is a high vulnerability published on September 4, 2026. 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 pgreadfile through FROM-clause syntax to read arbitrary files despite restricted-mode…
When was CVE-2026-85620 disclosed?
CVE-2026-85620 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 24, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85620 actively exploited?
CVE-2026-85620 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 59.4% of all scored CVEs.
What is the CVSS score of CVE-2026-85620?
CVE-2026-85620 has a CVSS v3 base score of 8.6 (NVD).
How do I remediate CVE-2026-85620?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85620, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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