CRITICAL
CVE-2026-82078
CVSS
9.1
KEV
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.
Weakness (CWE)
CWE-470
EPSS Score
3.57%
Probability of exploitation in next 30 days
88.8th percentile
References
https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/
Patch, Vendor Advisory
https://github.com/rapid7/metasploit-framework/pull/21842
Issue Tracking, Patch
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-82078
Patch, Third Party Advisory, US Government Resource
Base CVE data derived from NVD (public domain). Enrichment by
dbcve.org
(CC-BY-4.0). Fetched via API.