CVE-2026-12409 Landing Page Builder <= 1.5.3.6 - Cross-Site Request Forgery to ulpb_admin_data AJAX Action
Unauthenticated attackers can trick administrators into modifying arbitrary posts and metadata via forged requests in the Landing Page Builder plugin.
- 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-2026-12409?
CVE-2026-12409 is a medium-severity vulnerability in umarbajwa Landing Page Builder – Coming Soon page, Maintenance Mode, Lead Page, WordPress Landing Pages, published on 16 Jul 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 Landing Page Builder – Coming Soon page, Maintenance Mode, Lead Page, WordPress Landing Pages plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.5.3.6. This is due to missing or incorrect nonce validation on the ulpb_admin_ajax function. This makes it possible for unauthenticated attackers to create, update, retitle, or change the post status, slug, and type of arbitrary posts and write ULPB_DATA post meta via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. This attack requires the victim to hold an editor-level or administrator session, as the wp_ajax_ulpb_admin_data action enforces a capability check that the forged request must satisfy by inheriting the logged-in user's session cookies.
Weakness: CWE-352
Which versions are affected by CVE-2026-12409?
How do I fix CVE-2026-12409?
No fix has been published for CVE-2026-12409 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-12409 being exploited?
There is no known exploitation of CVE-2026-12409 in the wild and no public exploit code.
Sources
Also known as GHSA-fx4r-pqvc-gggc.