CVE detail
CVE-2026-82078: PaperCut NG/MF Unsafe Reflection Vulnerability
Source: CISA Known Exploited Vulnerabilities catalog · back to feed
Vendor / product
PaperCut · NG/MF
- Date added (KEV)
- Aug 31, 2026
- CISA due date
- Sep 14, 2026
- Ransomware campaign use
- Unknown
Required action
Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
Vendor fix: Vendor patch
Scorifya interpretation
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Plain English
Technical detail
From CISA
PaperCut NG/MF contains an unsafe reflection vulnerability that allows an attacker to manipulate system configuration parameters and execute arbitrary Java bytecode residing on the application classpath under the security context of the PaperCut server process. This vulnerability can be chained with CVE-2026-81578.
https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/?lid=2oneu2wt0ct4 ; BOD 26-04: https://www.cisa.gov/news-events/directives/bod-26-04-prioritizing-security-updates-based-risk ; Forensics Triage Requirements: https://www.cisa.gov/news-events/directives/bod-26-04-implementation-guidance-prioritizing-security-updates-based-risk ; https://nvd.nist.gov/vuln/detail/CVE-2026-82078
See what attackers can see on your domain
This vulnerability is on CISA's Known Exploited Vulnerabilities list, so it is being exploited in the wild right now. Scorifya can't test for PaperCut directly, but in about 30 seconds it shows what your own domain exposes publicly across TLS, security headers, DNS, and cookies: the surface attackers probe first.
SOC 2 compliance
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See Scorifya Controls →References
- https://www.papercut.com/kb/Main/security-bulletin-27-aug-2026-urgent-security-advisory/PatchVendor Advisory
- https://github.com/rapid7/metasploit-framework/pull/21842Issue TrackingPatch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-82078PatchThird Party AdvisoryUS Government Resource
Other recent CVEs from PaperCut
- CVE-2026-81578NG/MF, PaperCut NG/MF Missing Authentication for Critical Function Vulnerability
- CVE-2023-27351NG/MF, PaperCut NG/MF Improper Authentication Vulnerability
- CVE-2023-2533NG/MF, PaperCut NG/MF Cross-Site Request Forgery (CSRF) Vulnerability
- CVE-2023-27350MF/NG, PaperCut MF/NG Improper Access Control Vulnerability