High severity7.5CISA KEVNVD Advisory· Published Apr 20, 2023· Updated Apr 21, 2026

CVE-2023-27351

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.

Affected products

Papercut/Papercut Mf
cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*
Range: >=15.0,<20.1.7
Papercut/Papercut Ng
cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*
Range: >=15.0,<20.1.7

Patches

No patches discovered yet.

Vulnerability mechanics

AI mechanics synthesis has not run for this CVE yet.

References

www.papercut.com/kb/Main/PO-1216-and-PO-1219nvdVendor Advisory
www.zerodayinitiative.com/advisories/ZDI-23-232/nvdThird Party AdvisoryVDB Entry
www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource

News mentions

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