CVE-2026-14677

Name of the Vulnerable Software and Affected Versions PostgreSQL versions prior to 18.5 PostgreSQL versions prior to 17.11 PostgreSQL versions prior to 16.15 PostgreSQL versions prior to 15.19 PostgreSQL versions prior to 14.24

Description An integer wraparound issue exists in 32-bit builds of the PL/Tcl and PL/Perl extensions. This flaw allows an object creator to cause the server to undersize a memory allocation and perform an out-of-bounds write through specially crafted function bodies. Successful exploitation may lead to the execution of arbitrary code with the privileges of the operating system user running the database.

Recommendations Update to version 18.5 or later. Update to version 17.11 or later. Update to version 16.15 or later. Update to version 15.19 or later. Update to version 14.24 or later.