CVE-2026-14662 in PostgreSQL 18.*

Integer wraparound in PostgreSQL tsvector and tsquery data type functions allows an unprivileged database user to cause the server to undersize an allocation and write out-of-bounds, via crafted large inputs. This may execute arbitrary code as the operating system user running the database. These types are typically sourced from application logic, not taken from the application's user. Hence, application users attacking the database, through the application as a conduit, are unlikely. CVE-20

Severity

High 8.8

Exploitation

0% chance of exploit
in the next 30 days

Fix

Update to 18.5

Where

Workstation tool

How it matched

Version line match

First seen

2026-11-05 01:13:58 UTC

Source

https://nvd.nist.gov/vuln/detail/CVE-2026-14662