CVE-2026-82078
CriticalCVSS 9.4Summary
An unsafe dynamic class loading vulnerability exists in the database connection utilities of PaperCut MF and PaperCut NG. The application instantiates database driver classes based on configurable driver names without validating against an allowlist. If an attacker can manipulate system configuration, this enables execution of arbitrary Java bytecode under the security context of the PaperCut server process.
Risk Assessment
An attacker with configuration access can execute arbitrary Java code, leading to full server compromise.
Recommendation
Restrict access to system configuration and update PaperCut to a version with driver validation.
Original NVD description (English source)
An unsafe dynamic class loading vulnerability exists in the database connection utilities of PaperCut MF and PaperCut NG. The application instantiates database driver classes based on configurable driver names without validating against an allowlist of approved drivers. If an attacker can manipulate system configuration parameters, this enables the execution of arbitrary Java bytecode residing on the application classpath under the security context of the PaperCut server process.