CVE-2026-14668 PostgreSQL ctid type confusion in selectivity estimator discloses derivative of arbitrary read

What is CVE-2026-14668?

CVE-2026-14668 is a high-severity 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

Type confusion regarding input of PostgreSQL ctid data type selectivity estimator allows an object creator to view a calculation derived from the value of an arbitrary 4-byte span of memory, via a chosen non-ctid input. While the calculation loses precision, substantial memory value recovery appears possible. Versions before PostgreSQL 18.6, 17.11, 16.15, 15.19, and 14.24 are affected.

Weakness: CWE-843

Which versions are affected by CVE-2026-14668?

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

Products include Postgresql Postgresql.

How do I fix CVE-2026-14668?

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

Is CVE-2026-14668 being exploited?

There is no known exploitation of CVE-2026-14668 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-2026-14668, AZL-95699, BELL-CVE-2026-14668, BIT-postgresql-2026-14668, DEBIAN-CVE-2026-14668, ECHO-23cd-b47c-aa1a and 9 more.