CVE detail
CVE-2023-27351: PaperCut NG/MF Improper Authentication Vulnerability
Source: CISA Known Exploited Vulnerabilities catalog · back to feed
Vendor / product
PaperCut · NG/MF
- Date added (KEV)
- Apr 20, 2026
- CISA due date
- May 04, 2026
- Ransomware campaign use
- Known
Required action
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor fix: Vendor advisory
Scorifya interpretation
AI-generatedA short, structured read of the record above — generated when this page first loads, then cached for a week.
Plain English
Technical detail
From CISA
PaperCut NG/MF contains an improper authentication vulnerability that could allow remote attackers to bypass authentication on affected installations via the SecurityRequestFilter class.
https://www.papercut.com/kb/Main/PO-1216-and-PO-1219 ; https://nvd.nist.gov/vuln/detail/CVE-2023-27351
References
- https://www.papercut.com/kb/Main/PO-1216-and-PO-1219Vendor Advisory
- https://www.papercut.com/kb/Main/PO-1216-and-PO-1219Vendor Advisory
- https://www.zerodayinitiative.com/advisories/ZDI-23-232/Third Party AdvisoryVDB Entry
- https://www.zerodayinitiative.com/advisories/ZDI-23-232/Third Party AdvisoryVDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-27351US Government Resource
Other recent CVEs from PaperCut
- CVE-2023-2533NG/MF — PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability
- CVE-2023-27350MF/NG — PaperCut MF/NG Improper Access Control Vulnerability
Check your domain's public posture
Scorifya doesn't test for specific CVEs, but if patching PaperCut changed your headers or TLS, a fresh hardening scan helps confirm nothing regressed externally.