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CVE-2026-8794

PaperCut NG/MF: User enumeration via timing attack

MEDIUM
6.9
CVSS Score
Published: August 3, 2026 at 07:02 AM UTC
Updated: October 23, 2026 at 10:10 PM UTC
1 product affected across 1 vendorPapercut Ng

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Severity
MEDIUM6.9
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Papercut Ng· Papercut
90%
0 ≤ v < 26.0.30
Affected range stops below 26.0.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

Source: cverecord
https://www.papercut.com/kb/Main/papercut-ng-mf-security-bulletin-3-aug-2026/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.9MEDIUMPaperCut
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-208

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