PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Connector (PaperCut PaperCut MF/NG)
At a glance
- Source
- NVD
- EPSS
- EPSS 63.05 % · percentile 99 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- PaperCut
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-470 — Use of Externally-Controlled Input to Select Classes or Code
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 4.0 | CRITICAL 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 | PaperCut |
| CVSS 4.0 | CRITICAL 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/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 | NVD · eb41dac7-0af8-4f84-9f6d-0272772514f4 (Secondary) |
| CVSS 3.1 | CRITICAL 9.1 | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | NVD · nvd@nist.gov (Primary) |
European references
- ENISA EUVD · EUVD-2026-67714
- GCVE · GCVE-0-2026-82078
CERT-FR advisories
- CERTFR-2026-AVI-1095 — Multiples vulnérabilités dans Papercut · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*< 24.1.9cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*≥ 25.0.2 < 25.0.12cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*≥ 26.0.2 < 26.0.4cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*< 24.1.9cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*≥ 25.0.2 < 25.0.12cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*≥ 26.0.2 < 26.0.4
Affected products
| Product | Versions |
|---|---|
| PaperCut · PaperCut MF/NG | affected 0 < 24.1.10 ; affected 25.0.0 < 25.0.13 ; affected 26.0.0 < 26.0.5 |
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| CISA Known Exploited Vulnerabilities | CC0 1.0 |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |