Vulnerability Intelligence Report
Unrestricted Upload of File in PuMuKIT application
CVE-2026-4337
Unrestricted Upload of File with Dangerous Type vulnerability in the PuMuKIT application allows a unauthenticated user to upload any type of file to the server, and to any path where the web server user has write permissions. This could also allow them to delete files.
No Active Exploit Signals
CVSS Base Score
8.8
HIGH
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-434 ↗CWE-434 Unrestricted upload of file with dangerous type
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| PuMuKIT | PuMuKIT | current version (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
GitHub Advisory
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | Spanish National Cybersecurity Institute, S.A. (INCIBE) · CERT · Spain |
| Reserved | 2026-03-17T14:36:13 |
| Published | 2026-10-27T11:03:15 |
| Last Updated | 2026-10-27T11:03:15 |
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