Critical severity · published Mar 5, 2026
CVE-2026-27384
WordPress W3 Total Cache plugin <= 2.9.1 - Arbitrary Code Execution vulnerability
9.0
CVSS
0.3%
EPSS
No
On KEV
Description
Improper Validation of Specified Quantity in Input vulnerability in BoldGrid W3 Total Cache w3-total-cache allows Accessing Functionality Not Properly Constrained by ACLs.This issue affects W3 Total Cache: from n/a through <= 2.9.1.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.3% · higher than 25% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WT
W3 Total Cache · BoldGrid
through 2.9.1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-27384
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-27384
patchstack.com
https://patchstack.com/database/Wordpress/Plugin/w3-total-cache/vulnerability/wordpress-w3-total-cache-plugin-2-9-1-arbitrary-code-execution-vulnerability?_s_id=cve
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