CVE-2026-9282: high-severity vulnerability in boldgrid W3 Total Cache
W3 Total Cache <= 2.9.4 - Unauthenticated Arbitrary File Read via 'f_array[]' Parameter
Published · Updated
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58Vexday Risk Score
Patch now. It exploitation observed by VulnCheck and has a working public exploit.
ssvc Actcvss 7.5epss 2.9%
from disclosure to weapon
Published on NVDJul 11
VulnCheck+3d
The W3 Total Cache plugin for WordPress is vulnerable to Directory Traversal in all versions up to, and including, 2.9.4 via the setupSources function. This makes it possible for unauthenticated attackers to read the contents of arbitrary files on the server, which can contain sensitive information. Exploitation requires enabling manual minify mode and supplying a manual-format minify filename so that the hash is empty and the f_array[] entries are not overwritten before reaching setupSources().
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Affected products
boldgrid · W3 Total CacheRelated CVEs — boldgrid W3 Total Cache
In the same product, most dangerous first.
CVE-2026-5032HIGHW3 Total Cache <= 2.9.3 - Unauthenticated Security Token Exposure via User-Agent HeaderEPSS 3.2%CVE-2024-12008MEDIUMW3 Total Cache <= 2.8.1 Information Exposure via Log FilesEPSS 2.4%CVE-2024-12365HIGHW3 Total Cache <= 2.8.1 - Authenticated (Subscriber+) Missing Authorization to Server-Side Request ForgeryEPSS 1.8%CVE-2023-5359LOWW3 Total Cache <= 2.7.5 - Sensitive Credentials Stored in PlaintextEPSS 0.8%CVE-2024-12006MEDIUMW3 Total Cache <= 2.8.1 Missing Authorization to Unauthenticated Plugin Deactivation and Extensions Activation/DeactivationEPSS 0.5%CVE-2026-78438HIGHW3 Total Cache <= 2.10.5 - Unauthenticated Stored Cross-Site Scripting via LazyLoad Background MutatorEPSS 0.5%
References
https://plugins.trac.wordpress.org/browser/w3-total-cache/tags/2.9.4/lib/Minify/Minify/Controller/MinApp.php#L109https://plugins.trac.wordpress.org/browser/w3-total-cache/tags/2.9.4/lib/Minify/Minify/Controller/MinApp.php#L163https://plugins.trac.wordpress.org/browser/w3-total-cache/tags/2.9.4/Minify_MinifiedFileRequestHandler.php#L191https://plugins.trac.wordpress.org/browser/w3-total-cache/tags/2.9.4/Minify_Plugin.php#L132https://plugins.trac.wordpress.org/changeset?reponame=&old=3585227%40w3-total-cache&new=3585227%40w3-total-cachehttps://www.wordfence.com/threat-intel/vulnerabilities/id/e92cc06d-006f-4bba-a4ef-b23d80c00085?source=cve