CVE-2026-9282
HighCVSS 7.5Exploitation Probability (EPSS)
Low risk48th percentile - higher than 48% of all known CVEs
Summary
The W3 Total Cache plugin for WordPress up to version 2.9.4 is vulnerable to Directory Traversal via the setupSources function. Unauthenticated attackers can read arbitrary files on the server, potentially exposing sensitive information. Exploitation requires enabling manual minify mode and providing a specific minify filename.
Risk Assessment
The risk involves unauthorized reading of confidential data such as configuration files, passwords, or API keys, which could lead to further attacks and compromise the entire website.
Recommendation
It is recommended to immediately update the W3 Total Cache plugin to the latest available version that fixes this vulnerability. If updating is not possible, disable manual minify mode.
Other vulnerabilities in W3 Total Cache
See all- CVE-2026-39595Medium
W3 Total Cache versions up to 2.9.1 contain a broken access control vulnerability, potentially allowing unauthorized access to resources.
- CVE-2026-18051Critical
The W3 Total Cache WordPress plugin before 2.10.5 does not properly validate the request path used to build cache file names, allowing unauthenticated attackers to write a file into any existing directory on the server, inside or outside the web root, overwriting whatever occupies the target name. On Apache, the same flaw overwrites the site's .htaccess files, which breaks the site and can strip hardening rules that other security measures rely on.
- CVE-2026-57623Critical
The W3 Total Cache plugin versions up to 2.9.4 contain a critical vulnerability allowing unauthenticated remote arbitrary code execution. The flaw stems from insufficient input validation in the caching mechanism.
- CVE-2026-18109High
The W3 Total Cache plugin for WordPress up to version 2.10.3 is vulnerable to Stored Cross-Site Scripting via Comment Author Name due to insufficient input sanitization and output escaping. The vulnerability is only exploitable when the Lazy Load Images feature is enabled, as the unsafe re-emission occurs exclusively within the LazyLoad mutator's img tag rewriting step.
- CVE-2026-66695Medium
Path Traversal vulnerability in W3 Total Cache versions up to 2.10.2 allows an unauthenticated attacker to access files outside the root directory.
Original NVD description (English source)
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().