CVE-2026-12046Network attack vector

Remote code execution via unauthenticated pickle deserialization

Published Jun 18, 2026 · Updated Jun 18, 2026

Remote code execution in pgAdmin 4 6.9 through 9.15 allows remote attackers to run code through unauthenticated SQL Editor routes. The close and update_connection handlers omit the login decorator and pass a session-stored command object to pickle.loads. Exploitation requires server mode, knowledge of the Flask secret key, and host write access to the sessions directory; code runs as the pgAdmin process.

CVSS severity9.5
Critical
EPSS probability1.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Remote code execution in pgAdmin 4 6.9 through 9.15 allows remote attackers to run code through unauthenticated SQL Editor routes. The close and update_connection handlers omit the login decorator and pass a session-stored command object to pickle.loads. Exploitation requires server mode, knowledge of the Flask secret key, and host write access to the sessions directory; code runs as the pgAdmin process.

The record

CVE
CVE-2026-12046
Published
Jun 18, 2026
Updated
Jun 18, 2026
Vendor
pgAdmin Development Team
Product
pgAdmin 4
Classifications
CWE-502, CWE-306, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 18, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 18, 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=6.9 <9.16

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

pgAdmin Development Team · pgAdmin 4version=6.9 <9.16

Published CVSS scores

9.5PostgreSQLCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
9.0PostgreSQLCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

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 exploitUnconfirmed

Weakness, pattern, technique

CWE-502Deserialization of Untrusted Data
CWE-306Missing Authentication for Critical Function
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

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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