An improper authentication vulnerability in PaperCut MF/NG allows an unauthenticated, remote attacker to trigger report generation. By submitting report generation requests without valid credentials, an attacker can generate reports and gain unauthorized access to sensitive information.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
PaperCut PaperCut NG/MF unaffected
Version Status Constraints
0 affected < 25.0.13
26.0.0 affected < 26.0.5

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Project Subscriptions

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.papercut.com/kb/Main/security-bulletin-sep-2026/ cve-icon cve-icon
History

Thu, 24 Sep 2026 07:00:00 +0000

Type Values Removed Values Added
Description An improper authentication vulnerability in PaperCut MF/NG allows an unauthenticated, remote attacker to trigger report generation. By submitting report generation requests without valid credentials, an attacker can generate reports and gain unauthorized access to sensitive information.
Title PaperCut MF/NG: User permissions are not evaluated on report generation
Weaknesses CWE-639
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:L/SI:N/SA:N/AU:Y'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: PaperCut

Published:

Updated: 2026-09-24T06:46:54.879Z

Reserved: 2026-09-09T04:24:33.190Z

Link: CVE-2026-87739

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-24T07:16:34.780

Modified: 2026-09-24T07:16:34.780

Link: CVE-2026-87739

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-24T08:30:17Z

Weaknesses