CVE-2023-27351 — PaperCut NG/MF: PaperCut NG/MF Improper Authentication Vulnerability
CVE-2023-27351 — PaperCut NG/MF contains an improper authentication vulnerability that could allow remote attackers to bypass authentication on affected installations via the SecurityRequestFilter class.
What This Means For You
- CISA has confirmed active exploitation — immediate patching required.
- Added to CISA KEV catalog — federal agencies must remediate by 2026-05-04.
Related ATT&CK Techniques
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2023-27351 | Vulnerability | CVE-2023-27351 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | CISA |
| Channel | CISA KEV |
| Channel ID | cisa-kev |
| Message ID | 202327351 |
| Published | April 20, 2026 at 15:00 UTC |
| Original Link | https://www.papercut.com/kb/Main/PO-1216-and-PO-1219 |
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