Vulnerability · Published Mar 5, 2026 · Assigned by Patchstack
CVE-2026-27384WordPress W3 Total Cache plugin <= 2.9.1 - Arbitrary Code Execution vulnerability
Critical 9.0
In plain English
A critical-severity security flaw in W3 Total Cache from BoldGrid. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)9.0Critical
Exploit odds (30 days)0.4%top 70.5% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| BoldGrid | W3 Total Cache | 0 – through 2.9.1 |
Weakness: CWE-1284 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H