Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-81578— PaperCut MF/NG: Authentication Bypass

Quick assessment

Affected
PaperCut PaperCut MF/NG
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 和 PaperCut NG 的 Web 管理界面中存在一个访问控制不当的漏洞。在特定条件下，针对管理功能的未认证远程请求可能在访问验证检查完成之前触发后端操作。这使得未认证的远程攻击者能够修改某些系统配置。

CVSS 8.8 · High

Affected Version Matrix 1

VendorProduct Version RangeStatus
PaperCut PaperCut MF/NG < 24.1.10, 25.0.13, 26.0.5 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-81578

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
PaperCut MF/NG: Authentication Bypass
Source: CVE Program / CVE List V5
Vulnerability Description
An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用基本弱点进行的认证绕过
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
PaperCut PaperCut MF/NG 0 ~ 24.1.10, 25.0.13, 26.0.5 -

II. Public POCs for CVE-2026-81578

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-81578

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-81578 (1)

IV. Related Vulnerabilities

Same product: PaperCut MF/NG
Same vendor: PaperCut
Same weakness: CWE-305

V. Comments for CVE-2026-81578

No comments yet

Leave a comment