CVE-2026-82078

EUVD-2026-67714
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.
Unsafe Reflection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.1 CRITICAL
NETWORK
LOW
HIGH
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 99.2%
Affected Products (NVD)
VendorProductVersion
papercutpapercut_mf
𝑥
< 24.1.9
papercutpapercut_mf
25.0.2 ≤
𝑥
< 25.0.12
papercutpapercut_mf
26.0.2 ≤
𝑥
< 26.0.4
papercutpapercut_ng
𝑥
< 24.1.9
papercutpapercut_ng
25.0.2 ≤
𝑥
< 25.0.12
papercutpapercut_ng
26.0.2 ≤
𝑥
< 26.0.4
𝑥
= Vulnerable software versions