CVE-2026-82078

Exploitation active confirmée

Ajoutée au catalogue CISA KEV le 31/08/2026, correctif exigé avant le 14/09/2026 pour les agences fédérales américaines.

Action requise : 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.

Description officielle (NVD)

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.

Références

• 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

En bref

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS : probabilité estimée d'exploitation dans les 30 prochains jours.

Produits concernés

Sources officielles

Besoin d'aide ?

Nos experts évaluent votre exposition et vous accompagnent dans la correction.