What’s Vulnerable › Vulnerabilities
CVE-2026-8793: PaperCut NG/MF: Insufficient brute-force protection
- Severity: medium (CVSS 6.9 v4.0)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2026-08-03 · updated 2026-10-23
- Weakness: CWE-307
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.
Affected products
- PaperCut NG/MF: before 26.0.3 — fixed in 26.0.3
How to fix
Upgrade to a fixed version: PaperCut NG/MF 26.0.3. Check the vendor advisory for mitigations.
References
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