CVE-2026-15234 Codeless Page Builder <= 1.1.4 - Contributor+ Stored XSS via Shortcode Attribute
Contributors can inject malicious scripts via shortcode attributes, leading to session hijacking or code execution when administrators view the content.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-15234?
CVE-2026-15234 is a medium-severity cross-site scripting vulnerability in Unknown Codeless Page Builder, published on 1 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The Codeless Page Builder WordPress plugin through 1.1.4 does not sanitize or validate a shortcode attribute before using it as an HTML tag name when rendering content, allowing users with contributor-level access and above to inject arbitrary HTML and JavaScript that executes in the session of any higher-privileged user (such as an administrator) who views the content.
Weakness: CWE-79
Which versions are affected by CVE-2026-15234?
How do I fix CVE-2026-15234?
No fix has been published for CVE-2026-15234 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-2026-15234 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15234 exists.
Sources
Also known as GHSA-5wxq-4r9f-r3xm.