Vulnerability
CVE-2026-82078 — PaperCut NG/MF Unsafe Reflection Vulnerability
critical 9.4 Exploited in the wild 4 stories · 3 outlets
Impacted if
- PaperCut MF/NG < 24.1.10 · < 25.0.13 · < 26.0.5
over the network · admin rights
An unsafe dynamic class loading vulnerability exists in the database connection utilities of PaperCut MF and PaperCut NG.
CISA Known Exploited Vulnerabilities
Added on 2026-08-31, federal remediation due 2026-09-14. PaperCut NG/MF contains an unsafe reflection vulnerability that allows an attacker to manipulate system configuration parameters and execute arbitrary Java bytecode residing on the application classpath under the security context of the PaperCut server process. This vulnerability can be chained with CVE-2026-81578.
Required action: 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.
First seen by AX-NEWS · latest story . Severity: NVD, or the CVE record while the NVD has not scored it. This product uses data from the NVD API but is not endorsed or certified by the NVD.