CVE-2026-82078
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.
Actively exploited
- In the CISA exploited-vulnerabilities catalogue since Aug 31, 2026
- US federal agencies must remediate it by Sep 14, 2026 (BOD 22-01)
- Attacked 1 day before the vulnerability was made public
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Source: CISA KEV · Aug 31, 2026 Aug 30, 2026 Aug 28, 2026 Aug 28, 2026 Aug 28, 2026 Aug 28, 2026
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:HAffected products
| Vendors | Prodotto | Versioni |
|---|---|---|
| papercut | papercut mf | < 24.1.9 |
| papercut | papercut ng | < 24.1.9 |
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This product uses the NVD API but is not endorsed or certified by the NVD.