CVE-2026-87739— PaperCut MF/NG: User permissions are not evaluated on report generation
Quick assessment
Affected
PaperCut PaperCut NG/MF
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
PaperCut MF/NG 中存在一个认证缺陷漏洞，允许未经身份验证的远程攻击者触发报告生成。通过提交未提供有效凭证的报告生成请求，攻击者可以生成报告，并未经授权访问敏感信息。
Affected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| PaperCut | PaperCut NG/MF | < 25.0.13 |
affected |
26.0.0< 26.0.5 |
affected |
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I. Basic Information for CVE-2026-87739
Vulnerability Information
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Vulnerability Title
PaperCut MF/NG: User permissions are not evaluated on report generation
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| PaperCut | PaperCut NG/MF | 0 ~ 25.0.13 | - |
|
II. Public POCs for CVE-2026-87739
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-87739 (1)
Same Patch Batch · PaperCut · 2026-09-24 · 4 CVEs total
| CVE-2026-14780 | 7.5 HIGH | PaperCut NG/MF: Remote Code Execution via Scripting Subsystem |
| CVE-2026-82077 | 7.3 HIGH | PaperCut NG/MF: Remote Code Execution via Scan2Fax |
| CVE-2026-11744 | 3.8 LOW | PaperCut Hive Embedded App for Ricoh: Javascript injection |
IV. Related Vulnerabilities
Same product: PaperCut NG/MF
-
CVE-2026-82077
PaperCut NG/MF: Remote Code Execution via Scan2Fax -
CVE-2026-14780
PaperCut NG/MF: Remote Code Execution via Scripting Subsyste -
CVE-2026-8794
PaperCut NG/MF: User enumeration via timing attack -
CVE-2026-8793
PaperCut NG/MF: Insufficient brute-force protection -
CVE-2026-6418
PaperCut NG/MF: Path Traversal in Shared Account Synchroniza
Same vendor: PaperCut
-
CVE-2026-11744
PaperCut Hive Embedded App for Ricoh: Javascript injection -
CVE-2026-82077
PaperCut NG/MF: Remote Code Execution via Scan2Fax -
CVE-2026-14780
PaperCut NG/MF: Remote Code Execution via Scripting Subsyste -
CVE-2026-82078
PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Con -
CVE-2026-81578
PaperCut MF/NG: Authentication Bypass
Same weakness: CWE-639
-
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V. Comments for CVE-2026-87739
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