Quick answers
- Is CVE-2026-116763 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-116763 being exploited in the wild.
- How severe is CVE-2026-116763?
- Medium severity, with a CVSS score of 5.4, published 29 October 2026.
- Which products and versions are affected?
- LiteSpeed Cache for WordPress up to and including 7.9.1.
- Is there a fix for CVE-2026-116763?
- No fixed version is recorded yet. Disable the HTML Minify option (O_OPTM_HTML_MIN) until a patched version is available, or avoid using companion plugins that render comment content into raw-text script contexts. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-116763 attacked?
- It is attacked over the network.
- Am I affected by CVE-2026-116763?
- Check whether you run LiteSpeed Cache for WordPress at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
How to fix
Disable the HTML Minify option (O_OPTM_HTML_MIN) until a patched version is available, or avoid using companion plugins that render comment content into raw-text script contexts.
Technical details
Stored XSS in the 'comment' parameter due to insufficient input sanitization and output escaping in the HTML minification component. The vulnerability requires both the HTML Minify option (O_OPTM_HTML_MIN) to be enabled and a companion plugin that renders stored comments into raw-text script contexts. An unauthenticated attacker can inject arbitrary JavaScript that persists in the database and executes in users' browsers.
Affected products
- LiteSpeed Cache for WordPress up to and including 7.9.1
Timeline
- 2026-10-29: disclosed