Description
The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'bbp_reply_content' parameter in all versions up to, and including, 7.9.1 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires that an administrator has enabled Viewport Images (VPI) and configured a VPI filename that matches an image the attacker can embed in user-generated content — such as a bbPress topic where Subscriber-level Participants are permitted to post replies containing raw img tags.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
litespeedtech LiteSpeed Cache
Default version status: unaffected
0 to ≤ 7.9.1affected
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/8bf9b130-bb1e-43fc-b5c9-337646b8976e?source=cve ↗
- https://plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.1/src/media.cls.php#L968 ↗
- https://plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.1/src/media.cls.php#L936 ↗
- https://plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.1/src/utility.cls.php#L299 ↗
- https://github.com/litespeedtech/lscache_wp/commit/0fc5f9ad69a138b8ee1fe2d07a5e9ac2574e1eb0 ↗
- https://plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.2/src/media.cls.php ↗