CVE-2026-109985 Cross-site scripting in xSpeed Cache: AI-Powered Performance Hub with MCP, Caching & CDN
Authenticated contributors can inject arbitrary scripts via the post_content parameter, leading to stored XSS execution for other users.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-109985?
CVE-2026-109985 is a medium-severity cross-site scripting vulnerability in wpdevteam xSpeed Cache: AI-Powered Performance Hub with MCP, Caching & CDN, published on 17 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The xSpeed Cache: AI-Powered Performance Hub with MCP, Caching & CDN plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'content' parameter in all versions up to, and including, 1.4.2 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
Weakness: CWE-79
Which versions are affected by CVE-2026-109985?
How do I fix CVE-2026-109985?
No fix has been published for CVE-2026-109985 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-109985 being exploited?
There is no known exploitation of CVE-2026-109985 in the wild and no public exploit code.
Sources
Also known as GHSA-q4hg-2jqc-r6m6.