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PHP EUVD-2026-16164

| CVE-2026-4809 CRITICAL
Unrestricted Upload of File with Dangerous Type (CWE-434)
2026-03-26 309f9ea4-e3e9-4c6c-b79d-e8eb01244f2c
9.3
CVSS 4.0
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CVSS VectorNVD

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

3
EUVD ID Assigned
Mar 26, 2026 - 11:22 euvd
EUVD-2026-16164
Analysis Generated
Mar 26, 2026 - 11:22 vuln.today
CVE Published
Mar 26, 2026 - 11:16 nvd
CRITICAL 9.3

DescriptionNVD

plank/laravel-mediable through version 6.4.0 can allow upload of a dangerous file type when an application using the package accepts or prefers a client-supplied MIME type during file upload handling. In that configuration, a remote attacker can submit a file containing executable PHP code while declaring a benign image MIME type, resulting in arbitrary file upload. If the uploaded file is stored in a web-accessible and executable location, this may lead to remote code execution. At the time of publication, no patch was available and the vendor had not responded to coordinated disclosure attempts.

AnalysisAI

Remote code execution in plank/laravel-mediable PHP package through version 6.4.0 allows unauthenticated attackers to upload executable PHP files disguised with benign MIME types, achieving arbitrary code execution when files land in web-accessible directories. EPSS score of 0.39% (60th percentile) indicates low observed exploitation probability, though SSVC analysis confirms the vulnerability is automatable with total technical impact. …

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RemediationAI

Within 24 hours: Identify all applications using plank/laravel-mediable and document affected versions; immediately disable file upload functionality if operationally feasible or restrict uploads to authenticated users only. Within 7 days: Implement network-level controls (see compensating controls below) and conduct file system audit for suspicious PHP files in web-accessible directories created after deployment. …

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EUVD-2026-16164 vulnerability details – vuln.today

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