CVE-2022-26520: Debian Linux

Critical severity, CVSS 9.8. EPSS: 3% chance of exploitation in the next 30 days.

In pgjdbc before 42.3.3, an attacker (who controls the jdbc URL or properties) can call java.util.logging.FileHandler to write to arbitrary files through the loggerFile and loggerLevel connection properties. An example situation is that an attacker could create an executable JSP file under a Tomcat web root. NOTE: the vendor's position is that there is no pgjdbc vulnerability; instead, it is a vulnerability for any application to use the pgjdbc driver with untrusted connection properties

Affected products

• Debian Debian Linux: version 10.0 only; version 11.0 only
• PostgreSQL PostgreSQL Jdbc Driver: from 42.1.0, up to and including 42.1.4; from 42.3.0, before 42.3.3 (fixed in 42.3.3)

Published 2022-03-10. Last modified 2026-06-17.