papercut mf vulnerabilities and fixes

Recent CVEs affecting papercut mf, with upgrade or downgrade steps. 2 tracked.

papercut mf has 2 tracked vulnerabilities, 2 critical and 2 exploited in the wild (CISA KEV). A fixed release or vendor patch exists for 2. Most recent: 2026-08-28. Highest priority: CVE-2026-81578 (score 94/100).

• CVE-2026-82078 CRITICAL 9.1 EXPLOITED UPGRADE UPGRADE PaperCut NG/MF Unsafe Reflection Vulnerability
• CVE-2026-81578 CRITICAL 9.8 EXPLOITED UPGRADE UPGRADE PaperCut NG/MF Missing Authentication for Critical Function Vulnerability

FAQ

How do I fix papercut mf vulnerabilities?

Open the CVE for your version, check the affected range, then follow the listed action: upgrade to the fixed release, or downgrade or mitigate if no fix exists yet. Commands for each OS are shown on every CVE page.

Is papercut mf being exploited right now?

Yes: 2 papercut mf CVEs are on the CISA Known Exploited Vulnerabilities list, so patch those first.

Which papercut mf CVE should I patch first?

CVE-2026-81578 currently ranks highest (94/100): PaperCut NG/MF Missing Authentication for Critical Function Vulnerability.

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