CVE-2026-8793: PaperCut NG/MF does not properly restrict excessive authentication attempts within its login component. An unauthenticated remote attacker can exploit this vulnerability to perform

unknownCVE-2026-8793

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.

Details

Source: NVD Recent CVEs (US · database · site)
Severity: unknown
Published: 2026-08-03
Last updated: 2026-08-03
Exploitation: Not in CISA KEV at last sync

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2026-8793

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Low exploitation riskCVE-2026-87930.68% 30-day exploitation probability — currently an unlikely target, but scores change as exploit code circulates. Riskier than 49% of all scored CVEs.

Referenced CVEs

CVE	CSIRTS overview	External
CVE-2026-8793	coverage & exploitation status	NVD · CVE.org

Same CVEs, other sources

How other CERTs, PSIRTs and databases cover the vulnerabilities in this advisory.

unknownMultiples vulnérabilités dans Papercut (03 août 2026)cert-fr-avis

Recent advisories for PaperCut NG/MF does

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

unknownCVE-2026-8794: PaperCut NG/MF contains an observable timing discrepancy in its authentication component. An un…nvd · 2026-08-03
criticalexploitedCVE-2023-27351: PaperCut NG/MF Improper Authentication Vulnerabilitycisa-kev · 2026-04-20
criticalexploitedCVE-2023-2533: PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerabilitycisa-kev · 2025-07-28