CVE-2026-14670 PostgreSQL plperl tied object heap buffer overflow executes arbitrary code

What is CVE-2026-14670?

CVE-2026-14670 is a high-severity memory corruption vulnerability in Postgresql Postgresql, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Heap buffer overflow in PostgreSQL plperl return of a tied hash allows the function owner to execute arbitrary code as the operating system user running the database, via a crafted function body. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

Weakness: CWE-122

Which versions are affected by CVE-2026-14670?

1 open source package ship an affected version, including postgresql. It affects 1 product.

Products include Postgresql Postgresql.

How do I fix CVE-2026-14670?

Upgrade postgresql to a fixed version for your release line: 14.24.0, 15.19.0, 16.15.0 or 17.11.0.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2026-14670 being exploited?

There is no known exploitation of CVE-2026-14670 in the wild and no public exploit code.

Other vulnerabilities in Postgresql Postgresql

• CVE-2013-1902 Information disclosure in n/a Critical 10.0
• CVE-2013-1903 Information disclosure in n/a Critical 10.0
• CVE-2007-3279 Privilege escalation in n/a Critical 10.0
• CVE-2002-1399 Integer overflow in n/a Critical 10.0
• CVE-2016-3065 Information disclosure in n/a Critical 9.1

All Postgresql Postgresql vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2026-14670, AZL-95687, BELL-CVE-2026-14670, BIT-postgresql-2026-14670, DEBIAN-CVE-2026-14670, ECHO-9610-d795-ed97 and 9 more.