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

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Summary

CVECVE-2026-27384
StatePUBLISHED
AssignerPatchstack
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-03-05 06:16:27 UTC
Updated2026-04-22 21:26:58 UTC
DescriptionImproper 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.

Risk And Classification

Primary CVSS: v3.1 9 CRITICAL from ADP

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

EPSS: 0.000810000 probability, percentile 0.239160000 (date 2026-04-22)

Problem Types: CWE-1284 | CWE-1284 Improper Validation of Specified Quantity in Input

VersionSourceTypeScoreSeverityVector
3.1ADPDECLARED9CRITICALCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
3.1134c704f-9b21-4f2e-91b3-4a467353bcc0Secondary9CRITICALCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

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

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA BoldGrid W3 Total Cache affected 2.9.1 custom Not specified

References

ReferenceSourceLinkTags
patchstack.com/database/Wordpress/Plugin/w3-total-cache/vulnerability/wordpr... [email protected] patchstack.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

CNA: CODE WHITE GmbH | Patchstack Bug Bounty Program (en)

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