CVE-2026-116763: LiteSpeed Cache (WordPress plugin) · Cross-site Scripting
Affects LiteSpeed Cache (WordPress plugin)Source CVE Database V5
Not known to be exploited · CVSS 5.4 Medium.
Data as of 29 Oct 2026, 10:20 UTC
Thin evidence
One scorer or none| CNA (Wordfence) | CVSS 3.1 | 5.4 |
|---|
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 29 Oct 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 29 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| litespeedtechLiteSpeed Cache | Affected
| Fixed in– |
AI-suggested
Until a fix is available, it is recommended to disable the HTML Minify option (O_OPTM_HTML_MIN) to prevent exploitation. Additionally, review usage of companion plugins that render stored comment content in raw-text contexts such as JSON-LD script blocks and consider disabling or updating them.
Description
The LiteSpeed Cache plugin for WordPress contains a stored cross-site scripting (XSS) vulnerability in all versions up to and including 7.9.1. This vulnerability arises from improper input sanitization and output escaping of the 'comment' parameter. It is exploitable only when the HTML Minify option is enabled and a companion plugin renders stored comment content into a raw-text context such as a JSON-LD script block on the same page. An unauthenticated attacker can inject arbitrary scripts that execute when a user accesses the affected page.
References
- wordfence.com/threat-intel/vulnerabilities/id/99f876e0-8f13-468b-b5fa-ca61e3cf57b4?source=cve (opens in a new tab)
- plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.1/lib/html-min.cls.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.1/src/optimize.cls.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.1/lib/html-min.cls.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.1/lib/html-min.cls.php (opens in a new tab)
- plugins.trac.wordpress.org/browser/litespeed-cache/tags/7.9.1/src/optimizer.cls.php (opens in a new tab)
- plugins.trac.wordpress.org/changeset?reponame=&old=3757253%40litespeed-cache&new=3757253%40litespeed-cache (opens in a new tab)