Rapid7

vulnerability

PaperCut NG: CVE-2023-27351: Improper Authentication

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:C/I:N/A:N)
Published
Apr 20, 2023
Added
Apr 22, 2025
Modified
Apr 24, 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.

Solution

papercut-ng-upgrade-latest
Title
Rapid7 Labs

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