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CVE-2023-27351 — This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut…

Papercut · Papercut Mf · Published 20 Apr 2023 · Modified 1 Oct 2026

Description

This vulnerability allows remote attackers to bypass authentication on affected installations of PaperCut NG 22.0.5 (Build 63914). Authentication is not required to exploit this vulnerability. The specific flaw exists within the SecurityRequestFilter class. The issue results from improper implementation of the authentication algorithm. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-19226.

References

What to do
  1. Check whether Papercut Mf is in your asset inventory.
  2. Exploitation confirmed — patch within 72 hours.
  3. Record the decision in your risk register for audit evidence.
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Link: adminadda.com/cve/CVE-2023-27351