vulnerability
WordPress Plugin: w3-total-cache: CVE-2021-24427: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 3 | (AV:N/AC:M/Au:S/C:N/I:P/A:N) | Jun 16, 2021 | May 15, 2025 | Apr 30, 2026 |
Severity
3
CVSS
(AV:N/AC:M/Au:S/C:N/I:P/A:N)
Published
Jun 16, 2021
Added
May 15, 2025
Modified
Apr 30, 2026
Description
The W3 Total Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via several CDN settings in versions up to, and including, 2.1.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers with administrative level permissions and above to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This only affects multi-site installations and installations where unfiltered_html has been disabled.
Solution
w3-total-cache-plugin-cve-2021-24427
References
Rapid7 Labs
2026 Global Threat Landscape Report
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