October 12, 2026

CVE Watchtower

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CVE-2026-82078NVD

Vulnerability Summary

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.
Severity Level
CRITICAL(9.4)
Published Date
Aug 28, 2026
Last Modified
Sep 13, 2026
PoC
Available(Metasploit)
Exploitation Status
ACTIVE
EPSS Score (30-Day)
63.53%Probability
Root Weakness (CWE)
CWE-470: Unknown/Unlisted Weakness ↗
Refer to the official MITRE database for detailed architectural specifications regarding this weakness.
CVSS v4.0 Base Metrics — Score 9.4 (CRITICAL)
Attack VectorNetwork
Attack ComplexityLow
Attack RequirementsNone
Privileges RequiredHigh
User InteractionNone
Confidentiality (Vulnerable System)High
Integrity (Vulnerable System)High
Availability (Vulnerable System)High
Confidentiality (Subsequent System)High
Integrity (Subsequent System)High
Availability (Subsequent System)High

Affected & Patched Versions

Affected Versions
  • PaperCut PaperCut MF/NG < 24.1.10
  • PaperCut PaperCut MF/NG >= 25.0.0 and < 25.0.13
  • PaperCut PaperCut MF/NG >= 26.0.0 and < 26.0.5
Patched Versions
  • PaperCut PaperCut MF/NG 24.1.10
  • PaperCut PaperCut MF/NG 25.0.13
  • PaperCut PaperCut MF/NG 26.0.5
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🚫Ad-Free — Uninterrupted experience.
🎁7-Day Free Trial — Try Pro or Team, no card required.
📧Email Delivery — Threat intel straight to your inbox.
♾️Unlimited Vendors — Track your entire stack.
🚨All New CVEs — Be the first to know.
📈EPSS Spike Alerts — Catch rising risk before it peaks.
🎯Custom EPSS/CVSS — Filter noise, focus on risk.
🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.
🐙GitHub Issues — Auto-tracked, no duplicates.
📬Weekly Digest — One clean summary, not inbox spam.
🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).
💬Webhooks — Slack & Teams integration.
🔀Smart Routing — Critical alerts to one channel, rest to another.
🚫Ad-Free — Uninterrupted experience.

External References