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Description

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().

PUBLISHED Reserved 2026-05-22 | Published 2026-07-11 | Updated 2026-07-11 | Assigner Wordfence




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Problem types

CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Product status

Default status
unaffected

Any version
affected

Timeline

2026-05-22:Vendor Notified
2026-07-10:Disclosed

Credits

snr finder

References

www.wordfence.com/...-006f-4bba-a4ef-b23d80c00085?source=cve

plugins.trac.wordpress.org/...y/Minify/Controller/MinApp.php

plugins.trac.wordpress.org/...y/Minify/Controller/MinApp.php

plugins.trac.wordpress.org/...MinifiedFileRequestHandler.php

plugins.trac.wordpress.org/...e/tags/2.9.4/Minify_Plugin.php

plugins.trac.wordpress.org/...e&new=3585227%40w3-total-cache

cve.org (CVE-2026-9282)

nvd.nist.gov (CVE-2026-9282)

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