CVE-2026-6471 PUBLISHED

PostgreSQL logical decoding can dlopen arbitrary file

Assigner: PostgreSQL
Reserved: 17.04.2026 Published: 13.08.2026 Updated: 13.08.2026

Missing authorization in PostgreSQL logical decoding allows a non-superuser holding REPLICATION privilege to dlopen any file visible to the operating system account running the server, via the choice of logical decoding plugin. This in turn runs arbitrary code as that account. Versions before PostgreSQL 18.5, 17.11, 16.15, 15.19, and 14.24 are affected.

Metrics

CVSS 3.1

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 7.2

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	High	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	n/a
Product	PostgreSQL
Versions	Default: unaffected affected from 18 to 18.5 (excl.) affected from 17 to 17.11 (excl.) affected from 16 to 16.15 (excl.) affected from 15 to 15.19 (excl.) affected from 0 to 14.24 (excl.)

Affected Configurations

attacker has REPLICATION privilege

Credits

The PostgreSQL project thanks Vladimir Tokarev and Yu Kunpeng for reporting this problem.

References

https://www.postgresql.org/support/security/CVE-2026-6471/

Problem Types

Missing Authorization CWE