# CVE-2026-82078

## Summary

- **CVE ID:** CVE-2026-82078
- **Severity:** CRITICAL
- **CVSS Score:** 9.4 (CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H)
- **CWE:** CWE-470
- **Published:** Aug 28, 2026
- **Last Modified:** Sep 1, 2026

## 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

- PaperCut — PaperCut MF/NG (0)

## References

- [CNA](https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/)
- [CISA-ADP](https://github.com/rapid7/metasploit-framework/pull/21842)
- [CISA-ADP](https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-82078)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 1.69%
- **EPSS Percentile:** 75.7

## Known Exploited Vulnerabilities (KEV)

- **Date Added:** Aug 28, 2026
- **Due Date:** Sep 11, 2026

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._