Missing Authorization in PostgreSQL - CVE-2026-120145
Published: November 12, 2026
Vulnerability identifier: #VU166096
CSH Severity: High
CVSS v4: 8.4 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-120145
CWE-ID: CWE-862
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to execute arbitrary code on a subscriber as the operating system user running the subscription.
The vulnerability exists due to missing authorization in PostgreSQL logical replication when processing replication targets supplied by a publisher. A remote attacker can use a compromised publisher to name a system catalog as a replication target and write to it to execute arbitrary code on the subscriber.
Only subscriptions owned by a superuser are vulnerable.
Affected software
PostgreSQL
How to mitigate CVE-2026-120145
Install security update from vendor's website.
PostgreSQL - addressed in versions 14.25, 15.20, 16.16, 17.12, 18.7