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KEV Entry

CVE-2026-82078

Known Exploited Vulnerability Entry CISA

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Entry Details
Confirmed Exploited

CVE-2026-82078

2026-08-31 00:00 UTC

Timestamps

2026-08-31

2026-08-31

Scope

PaperCut NG/MF Unsafe Reflection Vulnerability | Affected: PaperCut / NG/MF | Description: 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. | 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. | Due date: 2026-09-14 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): 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

References
  • {'id': 'CVE-2026-82078', 'url': 'https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2026-82078'}

a8f6b3e7-114b-4e83-afce-1187f21d8614

CISA
405284c2-e461-4670-8979-7fd2c9755a60

2026-08-31 16:00 UTC

2026-08-31 16:00 UTC

Evidence
1
Type Source Signal Confidence Details GCVE Metadata
vendor_report cisa-kev successful_exploitation 0.80
View details 
{
  "cwes": [
    "CWE-470"
  ],
  "date_added": "2026-08-31",
  "due_date": "2026-09-14",
  "feed": "CISA Known Exploited Vulnerabilities Catalog",
  "knownRansomwareCampaignUse": "Unknown",
  "product": "NG/MF",
  "vendorProject": "PaperCut",
  "vulnerabilityName": "PaperCut NG/MF Unsafe Reflection Vulnerability"
}
 -
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