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.
How to fix
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA due date: May 4, 2026- papercut papercut_mf20.1.7, 21.2.11, 22.0.9 or later
- papercut papercut_ng20.1.7, 21.2.11, 22.0.9 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| papercut papercut_mf | 15.0 ≤ v < 20.1.7, 21.0.0 ≤ v < 21.2.11, 22.0.0 ≤ v < 22.0.9 | 20.1.7, 21.2.11, 22.0.9 |
| papercut papercut_ng | 15.0 ≤ v < 20.1.7, 21.0.0 ≤ v < 21.2.11, 22.0.0 ≤ v < 22.0.9 | 20.1.7, 21.2.11, 22.0.9 |
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Attack Surface Management
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