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TI-2023-20314 Aliases CVE-2023-39143GHSA-mm5w-gqw5-m4qx

PaperCut NG and PaperCut MF before 22.1.3 on Windows allow path traversal, enabling…

Priority CRITICAL 89CWE-22Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA.

Summary

PaperCut NG and PaperCut MF before 22.1.3 on Windows allow path traversal, enabling attackers to upload, read, or delete arbitrary files. This leads to remote code execution when external device integration is enabled (a very common configuration).

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.80065 99th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:*before 22.1.3VulnerablePaperCut
cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:*before 22.1.3VulnerablePaperCut
cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:*not specified by NVDRunning onMicrosoft
  • cpe:2.3:a:papercut:papercut_mf:*:*:*:*:*:*:*:* Versions before 22.1.3 Vulnerable ·PaperCut
  • cpe:2.3:a:papercut:papercut_ng:*:*:*:*:*:*:*:* Versions before 22.1.3 Vulnerable ·PaperCut
  • cpe:2.3:o:microsoft:windows:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Microsoft

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-39143
  2. 2026-10-03 Alias added: GHSA-mm5w-gqw5-m4qx

References

Exploit 1

Advisory 1

  • 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-2024-01136 Incorrect authorization controls in PaperCut NG/MF APIs CVSS 3.1CRITICAL 9.8
See all 30 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences