CVE-2026-14679 PostgreSQL stack buffer overflow in argument match writes 0x0 and 0x1 to server memory

What is CVE-2026-14679?

CVE-2026-14679 is a high-severity memory corruption vulnerability in Postgresql Postgresql, published on 13 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Stack buffer overflow in PostgreSQL argument name matching allows an object creator to achieve unknown impacts via OUT parameter count. The attack can write only 0x0 and 0x1 bytes. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

Weakness: CWE-121

Which versions are affected by CVE-2026-14679?

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

Products include Postgresql Postgresql.

How do I fix CVE-2026-14679?

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-2026-14679 being exploited?

There is no known exploitation of CVE-2026-14679 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-2026-14679, AZL-95690, BELL-CVE-2026-14679, BIT-postgresql-2026-14679, DEBIAN-CVE-2026-14679, ECHO-cd45-9423-f52d and 9 more.