CVE-2023-27351 — PaperCut NG/MF Improper Authentication Vulnerability
CVE-2023-27351: PaperCut NG/MF Improper Authentication Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | PaperCut |
| Product | NG/MF |
| Date added | 2026-04-20 |
| Due date | 2026-05-04 |
| Ransomware campaign use | Known |
Description
PaperCut NG/MF contains an improper authentication vulnerability that could allow remote attackers to bypass authentication on affected installations via the SecurityRequestFilter class.
Required action (CISA)
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Notes
https://www.papercut.com/kb/Main/PO-1216-and-PO-1219 ; https://nvd.nist.gov/vuln/detail/CVE-2023-27351
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-27351
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog