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pgAdmin 9.x < 9.16 Read-Only Transaction Bypass (CVE-2026-12045)

critical Nessus Plugin ID 322418

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Synopsis

The pgAdmin instance installed on the remote host is affected by a read-only transaction bypass vulnerability.

Description

The version of pgAdmin installed on the remote host is 9.x prior to 9.16. It is, therefore, affected by a read-only transaction bypass vulnerability:

 - The AI Assistant's execute_sql_query tool accepts multi-statement payloads. A single COMMIT followed by a write-statement terminates the enclosing BEGIN TRANSACTION READ ONLY wrapper and runs subsequent statements in autocommit mode. On a superuser-connected session this chains to operating-system command execution on the database host. (CVE-2026-12045)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade pgAdmin to version 9.16 or later.

See Also

https://github.com/pgadmin-org/pgadmin4/issues/10022

http://www.nessus.org/u?58802d4b

Plugin Details

Severity: Critical

ID: 322418

File Name: pgadmin_CVE-2026-12045.nasl

Version: 1.2

Type: Local

Agent: windows, macosx, unix

Family: Databases

Published: 6/24/2026

Updated: 6/25/2026

Configuration: Enable thorough checks (optional)

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 8.5

Temporal Score: 6.3

Vector: CVSS2#AV:N/AC:M/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2026-12045

CVSS v3

Risk Factor: Critical

Base Score: 9

Temporal Score: 7.8

Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

CVSS v4

Risk Factor: Critical

Base Score: 9.4

Threat Score: 7.6

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

Vulnerability Information

CPE: cpe:/a:postgresql:pgadmin_4

Required KB Items: installed_sw/PostgreSQL pgAdmin4

Exploit Ease: No known exploits are available

Patch Publication Date: 6/18/2026

Vulnerability Publication Date: 6/18/2026

Reference Information

CVE: CVE-2026-12045