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Critical · 9.4 Known exploited Public exploit CVE-2026-82078 EUVD-2026-67714GHSA-mjg5-wj9r-9mfx

PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Connector

Published Aug 28, 2026 · Updated Sep 13, 2026 · Assigned by PaperCut

Vendor: PaperCut Product: PaperCut MF/NG

Description

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.

Affected products

VendorProductAffectedFixed
PaperCut PaperCut MF/NG < 24.1.10, 25.0.0 – < 25.0.13, 26.0.0 – < 26.0.5 24.1.10

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

Metasploit 1 module

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Advisories 1

References