CVE-2026-87739

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.

Overview

State: PUBLISHED
Assigner (CNA): PaperCut
CVSS severity: MEDIUM
CVSS score: 6.9 / 10
CVSS 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
Effective score: 6.9 / 10 MEDIUM source: CNA overview
CWE(s): CWE-639
Reserved: 2026-09-09
Published: 2026-09-24 06:46 UTC
Last updated: 2026-09-24 12:42 UTC
Source: https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2026/87xxx/CVE-2026-87739.json

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

EPSS score: 0.0038 (probability of exploitation in next 30 days)
EPSS percentile: 28.96% vs all CVEs — higher = more likely to be exploited, as of 2026-09-24

Affected products (1)

Vendor	Product	Versions	Platforms
PaperCut	PaperCut NG/MF	`0` (affected), `26.0.0` (affected)	—

Vendor references (1)

References embedded in the original CVE record by the assigning CNA.

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

Web references (0)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

No web references attached yet.

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Raw JSON

The full cvelistV5 record. Download as CVE-2026-87739.json.

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