CVE-2026-2006 PostgreSQL missing validation of multibyte character length executes arbitrary code

What is CVE-2026-2006?

CVE-2026-2006 is a high-severity memory corruption vulnerability in Postgresql Postgresql, published on 12 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.

Official description

Missing validation of multibyte character length in PostgreSQL text manipulation allows a database user to issue crafted queries that achieve a buffer overrun. That suffices to execute arbitrary code as the operating system user running the database. Versions before PostgreSQL 18.2, 17.8, 16.12, 15.16, and 14.21 are affected.

Weakness: CWE-1285, CWE-129

Which versions are affected by CVE-2026-2006?

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

Products include Postgresql Postgresql.

How do I fix CVE-2026-2006?

Upgrade postgresql to a fixed version for your release line: 14.21.0, 15.16.0, 16.12.0 or 17.8.0.

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

Is CVE-2026-2006 being exploited?

There is no known exploitation of CVE-2026-2006 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-2026-2006, AZL-77426, AZL-77589, AZL-77643, BELL-CVE-2026-2006, BIT-postgresql-2026-2006 and 16 more.