Improper Authentication Issue in PaperCut MF/NG by PaperCut
CVE-2026-87739

6.9MEDIUM

Key Information:

Vendor

Papercut

Status
Papercut Ng/mf
Vendor
CVE Published:
24 September 2026

What is CVE-2026-87739?

An improper authentication vulnerability exists in PaperCut MF and NG that allows remote attackers to generate reports without valid authentication. This weakness can lead to unauthorized access to sensitive information, rendering the system susceptible to exploitation. Attackers can submit report generation requests, potentially compromising data integrity and confidentiality.

Affected Version(s)

PaperCut NG/MF 0 < 25.0.13

PaperCut NG/MF 26.0.0 < 26.0.5

References

https://www.papercut.com/kb/Main/security-bulletin-sep-2026/

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.