CVE-2026-81578
PaperCut NG/MF Missing Authentication for Critical Function Vulnerability
Summary
PaperCut NG/MF contains a missing authentication for critical function vulnerability which allows an unauthenticated remote attacker to modify certain system configurations. This vulnerability can be chained with CVE-2026-82078.
Affected software
Vendor: PaperCut · Product: NG/MF
Weakness types (CWE):
What to do
This vulnerability appears in CISA's Known Exploited Vulnerabilities catalog, meaning it is being exploited in the wild. Prioritize patching affected systems and verify exposure across your estate.
Related vulnerabilities in PaperCut
| CVE | Name | EPSS | Exploited |
|---|---|---|---|
| CVE-2023-27350 | PaperCut MF/NG Improper Access Control Vulnerability | 100.0% | Yes |
| CVE-2023-27351 | PaperCut NG/MF Improper Authentication Vulnerability | 78.1% | Yes |
| CVE-2023-2533 | PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability | 29.2% | Yes |
| CVE-2026-82078 | PaperCut NG/MF Unsafe Reflection Vulnerability | 1.7% | Yes |
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