critical Known exploitedREV. 01
CVE-2026-82078PaperCut NG/MF — Unsafe Database Driver Class Loading
PaperCut print management servers load database driver classes from a configurable name with no allowlist. An attacker who can change system configuration can run arbitrary Java code already on the classpath with the rights of the PaperCut server process.
Read the risk
THE VITAL STATS- CVSS score
- 9.1/ 10 CVSS v3.1
- EPSS probability
- 4% Likelihood of exploitation
- Attack complexity
- Low Conditions needed to exploit
- Known exploited
- Yes — CISA KEV
- CVE published
- 2026-08-28
- Added to KEV
- 2026-08-31
- Exploit published
- Not recorded
- Confidence
- high
- Kill chain
- execution
- MITRE ATT&CK
- —
- Severity
- critical
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attacker needsAbility to change PaperCut system configuration (high-privilege access, or chained with CVE-2026-81578)
Behind the card
5 REFERENCES- 01CVE recordNVD recordnvd.nist.gov
- 02CISACISA Known Exploited Vulnerabilities catalogcisa.gov
- 03Vendor advisorypapercut.compapercut.com
- 04Vendor advisorygithub.comgithub.com
- 05Vendor advisorycisa.govcisa.gov
Field-level provenanceTRACE THE SOURCES +
Which source supports each field, when it was retrieved, and who extracted it.
| Fields | Source | Retrieved | Extractor | Confidence |
|---|---|---|---|---|
| cvss, exploitation.attack_complexity, exploitation.exploit_available, references, published_at | nvd.nist.gov | 2026-09-21 | scrty-crds-pipeline/0.1 | high |
| exploitation.known_exploited, exploitation.kev_added | cisa.gov | 2026-09-21 | scrty-crds-pipeline/0.1 | high |
| epss | api.first.org | 2026-09-21 | scrty-crds-pipeline/0.1 | high |
| title, summary, severity, remediation, mitre_attack, kill_chain, recommended_action, confidence, tags, exploitation.prerequisites | nvd.nist.gov | 2026-09-21 | claude-code | high |
Printing history
THE RECORD- r1Initial base card
First printing. This card has not been reprinted since publication.