CVE-2026-8794

PaperCut NG/MF: User enumeration via timing attack

Published Aug 3, 2026 CVSS 4.0 · 6.9 Medium EPSS < 1% KEV · Not listed
Description
PaperCut NG/MF contains an observable timing discrepancy in its authentication component. An unauthenticated remote attacker can exploit this vulnerability to perform username enumeration by measuring response times during login attempts. The system executes a password hash comparison only when a valid account is supplied, creating a measurable timing oracle that reveals account existence.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Papercut
Papercut papercut Mf
Vendors & Products Papercut
Papercut papercut Mf
Type Values Removed Values Added
Description PaperCut NG/MF contains an observable timing discrepancy in its authentication component. An unauthenticated remote attacker can exploit this vulnerability to perform username enumeration by measuring response times during login attempts. The system executes a password hash comparison only when a valid account is supplied, creating a measurable timing oracle that reveals account existence.
Title PaperCut NG/MF: User enumeration via timing attack
Weaknesses CWE-208
References
Metrics cvssV4_0

{'score': 6.9, 'vector': '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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
PaperCut
Published
Updated
Aug 3, 2026, 2:30 PM
Reserved
May 17, 2026, 11:10 PM
Status
Awaiting Analysis
Published
Aug 3, 2026, 8:17 AM
Modified
Oct 23, 2026, 10:10 PM