CVE-2026-82078
PaperCut NG/MF Unsafe Reflection Vulnerability
Summary
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.
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-2026-81578 | PaperCut NG/MF Missing Authentication for Critical Function Vulnerability | 84.7% | 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 | 28.8% | Yes |
Is your domain exposed?
Run a free, instant security report for any domain — exposure score, email auth, TLS and breach metadata.
Get your free reportSources: CISA KEV catalog · NVD · FIRST EPSS
This product uses the NVD API but is not endorsed or certified by the NVD.
All information is aggregated from public sources for awareness only and does not constitute an accusation or a security assessment. No personal data or credentials are published.