PaperCut NG Unauthenticated File Upload
Priority HIGH 82CWE-434Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- None · Low · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-434.
Summary
An authentication bypass exists in PaperCut NG versions 22.0.12 and prior that could allow a remote, unauthenticated attacker to upload arbitrary files to the PaperCut NG host’s file storage. This could exhaust system resources and prevent the service from operating as expected.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.79159 99th percentileScored 2026-11-07
Fix Fixed PaperCut NG (PaperCut): 22.1.3
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| PaperCut | PaperCut NG | before 22.1.3 | 22.1.3 | Patch available | CNA |
- PaperCut NG VendorPaperCut Affected before 22.1.3 Fixed in 22.1.3 Patch available CNA
Remediation
- Fix · CNA PaperCut NG (PaperCut) Fixed in 22.1.3
Timeline
- 2026-10-02 Threatist record created from CVE-2023-3486
- 2026-10-03 Alias added: GHSA-c382-pg7w-vxgr
References
More Papercut Mf vulnerabilities
- TI-2026-56642 PaperCut MF/NG: Unsafe Dynamic Class Loading in Database Connector KEVCVSS 4.0CRITICAL 9.4
- TI-2023-12085 Improper access control in PaperCut NG KEVCVSS 3.1CRITICAL 9.8
- TI-2023-02373 PaperCut MF/NG 22.0.10 (Build 65996 2023-03-27) - Remote code execution via CSRF KEVCVSS 3.1HIGH 8.8
- TI-2026-56284 PaperCut MF/NG: Authentication Bypass KEVCVSS 4.0HIGH 8.8
- TI-2023-12086 Improper authentication in PaperCut NG KEVCVSS 3.1HIGH 7.5
- TI-2023-20314 PaperCut NG and PaperCut MF before 22.1.3 on Windows allow path traversal, enabling… CVSS 3.1CRITICAL 9.8
Sources
- CVE-2023-3486 · CVE Program
- CVE-2023-3486 · NVD
- FIRST EPSS
- GHSA-c382-pg7w-vxgr · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences