PaperCut NG/MF Improper Authentication Vulnerability

Public source report. This item is not matched to your stack and does not establish whether you are affected.

• NewsExploited · CISA KEVKnown ransomware usePaperCut · 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.

  CISA's required action · due 4 May 2026 for U.S. federal civilian agencies

  Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

  Cited by CISA: papercut.com · nvd.nist.gov

  Added to KEV 20 Apr 2026 · Source checked 4 Nov 2026, 16:35 UTC · CISA KEV entry

  Loading voting…