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CVE-2026-82078

PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Connector

CVSS 4.0 9.4 CRITICALCheck source for fixed versionsCISA KEV
Original advisory

cve-program · CVE-2026-82078

Published

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.

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Affected versions, risk and source history

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Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.

CVE-2026-82078 · CVE overview and exploitation status

cve-program · CVE-2026-82078

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Sources read 13 Nov 18:29 UTC · 274 of 275 readable · 273 fully read · documentation 469/469 current

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