CVE-2026-13295 Cross-site scripting in Page Builder by SiteOrigin
Authenticated contributors can inject arbitrary scripts via the panels_data parameter, leading to stored XSS execution on frontend pages.
- 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-2026-13295?
CVE-2026-13295 is a medium-severity cross-site scripting vulnerability in gpriday Page Builder by SiteOrigin, published on 27 Jun 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Page Builder by SiteOrigin plugin for WordPress is vulnerable to Stored Cross-Site Scripting via panels_data Parameter in all versions up to, and including, 2.34.3 due to insufficient input sanitization and output escaping. 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. This is possible because the nonce and edit_post capability checks enforced during save are both satisfied by Contributor-level users for their own posts, and the panels_data value is stored as post meta — outside the scope of WordPress's unfiltered_html carve-out — meaning no wp_kses fallback prevents the unsanitized WP_Widget_Custom_HTML content from being persisted and later rendered verbatim on the frontend.
Weakness: CWE-79
Which versions are affected by CVE-2026-13295?
How do I fix CVE-2026-13295?
No fix has been published for CVE-2026-13295 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-2026-13295 being exploited?
There is no known exploitation of CVE-2026-13295 in the wild and no public exploit code.
Sources
Also known as GHSA-qq5h-jpgc-p42f.