CVE-2026-81578: CWE-305 Authentication bypass by primary weakness in PaperCut PaperCut MF/NG
An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.
CVE-2026-81578: CWE-305 Authentication bypass by primary weakness in PaperCut PaperCut MF/NG
Description
An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.
CVSS v4.0
Score 8.8high
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- PaperCut
- Date Reserved
- 2026-08-27T07:34:07.363Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a91ab5dacd9273b490abfe9
Added to database: 08/28/2026, 15:38:05 UTC
Last updated: 08/29/2026, 02:05:06 UTC
Views: 11
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