CVE-2026-14995 Autoptimize <= 3.1.15.1 - Unauthenticated Stored Cross-Site Scripting via REQUEST_URI Path
Unauthenticated attackers can inject arbitrary scripts via REQUEST_URI in Autoptimize if Critical CSS is active, leading to stored XSS.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-14995?
CVE-2026-14995 is a high-severity cross-site scripting vulnerability in optimizingmatters Autoptimize, published on 1 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Autoptimize plugin for WordPress is vulnerable to Stored Cross-Site Scripting via REQUEST_URI Path in all versions up to, and including, 3.1.15.1 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. Exploitation requires the Critical CSS feature to be active with a valid API key configured, as this is the precondition for unauthenticated frontend requests to trigger queue entries via ao_ccss_enqueue().
Weakness: CWE-79
Which versions are affected by CVE-2026-14995?
How do I fix CVE-2026-14995?
No fix has been published for CVE-2026-14995 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-2026-14995 being exploited?
There is no known exploitation of CVE-2026-14995 in the wild and no public exploit code.
Sources
Also known as GHSA-v9f4-5xpx-364q.