Name: CVE-2023-27351: Improper Authentication
Creator: Rapid7
Published: 2023-04-20T00:00:00.000Z
License: https://www.rapid7.com/legal/website-terms-of-use/
Keywords: CVE, CVE-2023-27351, CWE-287, Exploited in the Wild, CISA KEV Exploit, Rapid7 Critical, Used with Ransomware, CVSS 7.5, EPSS 0.87734, CISA KEV

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.

CVSS Details

CVSS 3.1 Base Score: 7.5
CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVSS 3.0 Base Score: 8.2
CVSS 3.0 Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N)

Covered by Rapid7

Product	Vendor Advisory	Solution File	Added	Published
Papercut	—	Upgrade PaperCut NG/MF to the latest version recommended by the March vulnerability bulletin	Apr 28, 2023	Apr 20, 2023
Papercut Mf	—	Upgrade PaperCut MF to the latest version	Apr 22, 2025	Apr 20, 2023
Papercut Ng	—	Upgrade PaperCut NG to the latest version	Apr 22, 2025	Apr 20, 2023

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CVSS Details

Covered by Rapid7

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