Vulnerability Analysis
PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Connector
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.
CISA KEV
SSVC: Active Exploitation
CVSS Base Score
9.4
CRITICAL
Exploitability:-
Impact Score:-
Temporal Score:-
EPSS:0.46%
Threat Intelligence Signals
CISA KEV
YES
KEV Date Added
2026-08-31
Ransomware Use
Unknown
KEV Due Date
2026-09-14
VulnCheck In-the-Wild
No
Nuclei Template
No
EPSS Score
0.462%
EPSS Percentile
38.3th pct
GHSA ID
GitHub Severity
CRITICAL
SSVC Exploitation
Active
SSVC Automatable
No
Vulnerability Class
—
Identity & Timeline
| Status | - |
| Assigning Authority | - |
| Discovered Via | - |
| Record Completeness | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
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