CVE-2026-8793— PaperCut NG/MF: Insufficient brute-force protection
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 NG/MF是PaperCut公司的一款打印管理软件。 PaperCut NG/MF 26.0.3之前版本存在授权问题漏洞，该漏洞源于登录组件未正确限制过多的身份验证尝试，可能导致未经身份验证的远程攻击者进行无限制的暴力破解或撞库攻击，且在某些配置下不会触发账户锁定或速率限制机制。
Possible ATT&CK Techniques 1 AI
T1110 · Brute ForceAffected Version Matrix 1
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| PaperCut | PaperCut NG/MF | < 26.0.3 |
affected |
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I. Basic Information for CVE-2026-8793
Vulnerability Information
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Vulnerability Title
PaperCut NG/MF: Insufficient brute-force protection
Source: CVE Program / CVE List V5
Vulnerability Description
PaperCut NG/MF does not properly restrict excessive authentication attempts within its login component. An unauthenticated remote attacker can exploit this vulnerability to perform unrestricted brute-force or credential-stuffing attacks without triggering account lockout or rate-limiting mechanisms in some 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:N/VA:N/SC:L/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
过多认证尝试的限制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
PaperCut NG/MF 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
PaperCut NG/MF是PaperCut公司的一款打印管理软件。 PaperCut NG/MF 26.0.3之前版本存在授权问题漏洞，该漏洞源于登录组件未正确限制过多的身份验证尝试，可能导致未经身份验证的远程攻击者进行无限制的暴力破解或撞库攻击，且在某些配置下不会触发账户锁定或速率限制机制。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| PaperCut | PaperCut NG/MF | 0 ~ 26.0.3 | - |
|
II. Public POCs for CVE-2026-8793
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2026-8793 (1)
IV. Related Vulnerabilities
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Same vendor: PaperCut
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CVE-2026-82078
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Same weakness: CWE-307
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V. Comments for CVE-2026-8793
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