CVE-2026-81578
PaperCut NG/MF Missing Authentication for Critical Function Vulnerability
8.8
CVSS 4.0
85.2 %
EPSS (current)
2026-08-31
KEV addition
No
Ransomware
Timeline
Publication, first public exploit and KEV addition on a day axis.
Key facts
Vendor / product: PaperCut / NG/MF
Published: 2026-08-28 · Due (CISA): 2026-09-14
CWE: CWE-305 · EU list: no
Exploit references (metadata only)
| Source | Reference | Title | Date |
|---|---|---|---|
| nuclei | http/cves/2026/CVE-2026-81578.yaml | PaperCut NG/MF <=26.0.4 - Unauthenticated ConfigEditor Access via Tapestry Complex-Direct | – |
| metasploit | exploit/multi/http/papercut_ng_external_user_lookup_rce | exploit/multi/http/papercut_ng_external_user_lookup_rce | 2026-08-27 |
References only — no downloads or instructions.