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CVE-2026-27384

CriticalPublished

WordPress W3 Total Cache plugin <= 2.9.1 - Arbitrary Code Execution vulnerability

Published: Mar 5, 2026
Updated: Apr 29, 2026
Assigning CNA: Patchstack
Evidence observed: Aug 17, 2026

Primary CVSS

9.0/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

EPSS probability estimate

0.3%

Low · next 30 days

Percentile: 23.3%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

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.

Sources

CVE-2026-27384Exploit
Automated scanner and exploit for CVE-2026-27384, an unauthenticated RCE in W3 Total Cache via mfunc/eval() injection. Features auto-detection, 48 payload variants, interactive shell, and batch scanning.

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