The LiteSpeed Cache plugin for WordPress is vulnerable to Stored Cross-Site Scripting via crafted `<img>` tag attributes in all versions up to, and including, 7.7. This is due to a flawed regular expression that is used to strip `width` and `height` attributes from images when the "Lazy Load Images" and "Add Missing Sizes" features are enabled. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that execute whenever a user accesses an injected page.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Litespeed Cache Plugin | — | Update litespeed-cache plugin to version 7.8, or a newer patched version | Oct 30, 2026 | Aug 27, 2026 |
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