Type Confusion in PostgreSQL - CVE-2026-14680
Published: August 15, 2026
Vulnerability identifier: #VU142628
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-14680
CWE-ID: CWE-843
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to execute arbitrary code.
The vulnerability exists due to type confusion in functions with "internal" argument types when invoking such functions from SQL. A remote user can call functions with that argument type to execute arbitrary code.
Successful exploitation can run code as the operating system user running the database.
Affected software
PostgreSQL
Debian Linux
postgresql-17 (Debian package)
Debian Linux
postgresql-17 (Debian package)
How to mitigate CVE-2026-14680
Install security update from vendor's website.
PostgreSQL - addressed in versions 14.24, 15.19, 16.15, 17.11, 18.5
postgresql-17 (Debian package) - update to 17.11-0+deb13u1
postgresql-17 (Debian package) - update to 17.11-0+deb13u1