CVE-2026-120145: PostgreSQL logical replication arbitrary code execution

CVE-2026-120145 · Severity: high · CVSS 8.8 · Published 2026-11-12

PostgreSQL is a database server that replicates data from a publisher database to subscriber databases. A compromised publisher can trick a superuser-owned subscriber into executing arbitrary code on the subscriber's server by designating a system catalog as a replication target. This allows the attacker to run commands with the privileges of the operating system user running PostgreSQL.

Technologies: PostgreSQL. Vendors: PostgreSQL.

Quick answers

Is CVE-2026-120145 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-120145 being exploited in the wild.
How severe is CVE-2026-120145?
High severity, with a CVSS score of 8.8, published 12 November 2026.
Which products and versions are affected?
PostgreSQL before 14.25, 15.20, 16.16, 17.12, and 18.7.
Is there a fix for CVE-2026-120145?
Yes: fixed in PostgreSQL 14.25, 15.20, 16.16, 17.12, 18.7. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-120145 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-120145?
Check whether you run PostgreSQL at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: PostgreSQL 14.25, 15.20, 16.16, 17.12, 18.7

Technical details

Missing authorization checks in PostgreSQL logical replication enable a compromised publisher to target system catalogs for replication. The vulnerability exploits insufficient validation of replication targets, allowing writes to critical system tables. Only subscriptions owned by superusers are vulnerable; the attack requires network access to a publisher and compromises the subscriber's database integrity and system security.

Affected products

  • PostgreSQL PostgreSQL before 14.25, 15.20, 16.16, 17.12, and 18.7

Timeline

  • 2026-11-12: disclosed
  • 2026-11-12: patched

References

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