W3 Total Cache <= 2.10.6 - Unauthenticated Stored Cross-Site Scripting via Comment Content
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
The W3 Total Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via Comment Content via Output-Buffer Regex Rewrite in all versions up to, and including, 2.10.6 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This vulnerability is only exploitable when the 'Remove query strings from static resources' option is enabled in W3 Total Cache, as mutate_url() must strip the '?' delimiter and everything following it — including the closing quote of the outer attribute — to break the attribute boundary.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- boldgrid W3 Total Cache
through 2.10.6
References 6
plugins.trac.wordpress.org
- browser/w3-total-cache/tags/2.10.6/BrowserCache_Plugin.php#L259
- browser/w3-total-cache/tags/2.10.6/BrowserCache_Plugin.php#L208
- browser/w3-total-cache/tags/2.10.6/BrowserCache_Plugin.php#L336
- changeset?reponame=&new=3723494%40w3-total-cache%2Ftags%2F2.10.7&old=3681561%40w3-total-cache%2Ftags%2F2.10.6
- changeset/3723494/w3-total-cache/trunk/BrowserCache_Plugin.php