CVE-2026-6471
PostgreSQL logical decoding can dlopen arbitrary file
- Published
- Aug 13, 2026
- Updated
- Aug 14, 2026
- Assigning CNA
- PostgreSQL
- Evidence observed
- Sep 5, 2026
Primary CVSS
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
- Percentile
- 21.3%
- Model date
- Sep 21, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
2- CVE-2026-6471Detection
Non-destructive PostgreSQL vulnerability checker for CVE-2026-6471. Audits server version and REPLICATION privileges to identify exposure to logical decoding authorization flaw, with remediation guidance.
Proof-of-concept exploit for CVE-2026-6471, demonstrating privilege escalation in PostgreSQL via logical decoding dlopen to achieve arbitrary code execution and superuser backdoor.
Responsible use
Use vulnerability information only on systems you own or are authorized to test. Kitploit links to public research metadata and does not store exploit code or malicious payloads.