Critical severity · published Aug 20, 2026
CVE-2026-66600
WordPress Media LIbrary Assistant plugin <= 3.39 - Arbitrary File Upload vulnerability
9.1
CVSS
0.5%
EPSS
No
On KEV
Description
Author Arbitrary File Upload in Media LIbrary Assistant <= 3.39 versions.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
High
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 43% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
ML
Media LIbrary Assistant · David Lingren
through 3.39 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-66600
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-66600
patchstack.com
https://patchstack.com/database/wordpress/plugin/media-library-assistant/vulnerability/wordpress-media-library-assistant-plugin-3-39-arbitrary-file-upload-vulnerability?_s_id=cve
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