CVE-2026-9282 json
W3 Total Cache <= 2.9.4 - Unauthenticated Arbitrary File Read via 'f_array[]' Parameter
published 4mo ago modified 3mo ago also EUVD-2026-43164
- cvss
- 7.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.9%
- EPSS 2.9% chance of exploitation in 30 days, percentile 86%
- public exploits
- 0
- none known
Summary
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().
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 3mo ago
Exploit prediction
2.86% chance of exploitation in the next 30 days, higher than 86% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N |
Affected products
- boldgrid W3 Total Cache
Classification
- Weakness
-
- CWE-22 Improper Limitation of a Pathname to a Restricted Directory
- Technology feeds
References
- wordfence.com /threat-intel/vulnerabilities/id/e92cc06d-006f-4bba-a4ef-b23d80c00085?source=cve
- plugins.trac.wordpress.org /browser/w3-total-cache/tags/2.9.4/lib/Minify/Minify/Controller/MinApp.php#L163
- plugins.trac.wordpress.org /browser/w3-total-cache/tags/2.9.4/lib/Minify/Minify/Controller/MinApp.php#L109
- plugins.trac.wordpress.org /browser/w3-total-cache/tags/2.9.4/Minify_MinifiedFileRequestHandler.php#L191
- plugins.trac.wordpress.org /browser/w3-total-cache/tags/2.9.4/Minify_Plugin.php#L132
- plugins.trac.wordpress.org /changeset?reponame=&old=3585227%40w3-total-cache&new=3585227%40w3-total-cache
Sources
- CVE List CVE-2026-9282
- NVD CVE-2026-9282
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.