CVE-2026-88783 Kubio AI Page Builder < 2.9.3 - Unauthenticated Stored XSS via Comment Content
Unauthenticated attackers can inject malicious scripts via comments that execute in visitors' or administrators' browsers, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-88783?
CVE-2026-88783 is a high-severity cross-site scripting vulnerability in Unknown Kubio AI Page Builder, published on 3 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The Kubio AI Page Builder WordPress plugin before 2.9.3 does not limit its widening of the allowed HTML elements to the editor context, so the wider set is applied when filtering content submitted by unauthenticated users as well, allowing them to store markup which the Kubio AI Page Builder WordPress plugin before 2.9.3's own script later executes in the browser of any visitor, or of an administrator reviewing the still-unapproved submission.
Weakness: CWE-79
Which versions are affected by CVE-2026-88783?
How do I fix CVE-2026-88783?
No fix has been published for CVE-2026-88783 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-2026-88783 being exploited?
There is no known exploitation of CVE-2026-88783 in the wild and no public exploit code.
Sources
Also known as GHSA-w96f-q24m-hc95.