CVE-2026-85620Public exploitNetwork attack vector

Arbitrary file read via unchecked RangeFunction calls

Published Sep 4, 2026 · Updated Sep 4, 2026

Incorrect authorization in Crystal DBA Postgres MCP Pro 0.3.0 allows remote attackers to read files through crafted SQL queries. SafeSqlDriver allows RangeFunction nodes but does not apply its function-name allowlist to calls nested in those FROM-clause nodes. Exploitation requires restricted mode and a PostgreSQL role permitted to invoke server-side file functions, exposing files readable by the database process.

CVSS severity9.2
Critical
EPSS probability0.37%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Crystal DBA Postgres MCP Pro 0.3.0 allows remote attackers to read files through crafted SQL queries. SafeSqlDriver allows RangeFunction nodes but does not apply its function-name allowlist to calls nested in those FROM-clause nodes. Exploitation requires restricted mode and a PostgreSQL role permitted to invoke server-side file functions, exposing files readable by the database process.

The record

CVE
CVE-2026-85620
Published
Sep 4, 2026
Updated
Sep 4, 2026
Vendor
Crystal DBA
Product
Postgres MCP Pro
Classifications
CWE-863, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 4, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 4, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=0.3.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Crystal DBA · Postgres MCP Proversion=0 <=0.3.0

Published CVSS scores

8.6VulnCheckCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
9.2VulnCheckCVSS: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 describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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