CVE-2026-96899 Optima Express 8.6.0 - 8.7.5 - Author+ Stored XSS via faq_script
Authors can inject malicious scripts via the faq_script field in Optima Express IDX, leading to stored XSS attacks against site visitors.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-96899?
CVE-2026-96899 is a medium-severity cross-site scripting vulnerability in Unknown Optima Express IDX, published on 27 Sep 2026. An attacker needs administrator access to exploit it, and only if a user opens a file or follows a link.
Official description
The Optima Express IDX WordPress plugin before 8.7.6 does not properly neutralise a script value submitted through one of its REST endpoints before storing it and echoing it into the document head when the post is rendered, allowing users with a role as low as author to perform Stored Cross-Site Scripting attacks.
Weakness: CWE-79
Which versions are affected by CVE-2026-96899?
How do I fix CVE-2026-96899?
No fix has been published for CVE-2026-96899 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-2026-96899 being exploited?
There is no known exploitation of CVE-2026-96899 in the wild and no public exploit code.
Sources
Also known as GHSA-xprw-377p-8v85.