CVE-2026-2029 Cross-site scripting in Livemesh Addons for Beaver Builder
Authenticated attackers can inject arbitrary scripts via shortcode attributes, leading to code execution when pages are viewed.
- 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-2026-2029?
CVE-2026-2029 is a medium-severity cross-site scripting vulnerability in Livemesh Addons for Beaver Builder, published on 26 Feb 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Livemesh Addons for Beaver Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the `[labb_pricing_item]` shortcode's `title` and `value` attributes in all versions up to, and including, 3.9.2 due to insufficient input sanitization and output escaping. Specifically, the plugin uses `htmlspecialchars_decode()` after `wp_kses_post()`, which decodes HTML entities back into executable code after sanitization has occurred. 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-2026-2029?
How do I fix CVE-2026-2029?
No fix has been published for CVE-2026-2029 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-2026-2029 being exploited?
There is no known exploitation of CVE-2026-2029 in the wild and no public exploit code.
Sources
Also known as GHSA-9rg8-r3vc-rhj3.