CVE-2026-82078 in papercut mf
LogPulse has a published detection rule for this CVE: it raises a notable when someone tries to exploit it.
What the vulnerability is
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.
Affected software: papercut mf, papercut ng
Scores
- CVSS: 9.4 (critical)
- EPSS: 63.05% chance of exploitation in the next 30 days
- CISA KEV: Known exploited, listed 2026-08-31
- Published: 2026-08-28
What LogPulse has for it
- Detection rule: Yes, published
- Agent check (vulnerable version): Yes, published
- Mitigation: No
In the news
1 publication wrote about this CVE in the last 14 days, most recently on 2026-11-05.
- Barracuda Networks is your new best friend (Barracuda Email Security Gateway Pre-Auth Remote Root RCE CVE-2026-116606 / CVE-2026-111560) (watchTowr Labs, 2026-11-05)
Source data: NIST NVD, CISA KEV and FIRST EPSS. LogPulse processes new CVEs every hour.
We build every detection with great care, but no two environments are the same. Log sources, parsing and configuration differ, so test a detection in your own environment before you rely on it.