CVE-2026-15404 Bulk Page Generator <= 2.5.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Post Title
Authenticated attackers can inject scripts via post titles that execute in admin sessions, potentially leading to account takeover.
- 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-2026-15404?
CVE-2026-15404 is a medium-severity cross-site scripting vulnerability in niklaslindemann Bulk Page Generator – LPagery, published on 23 Jul 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Lpagery plugin for WordPress is vulnerable to Stored Cross-Site Scripting via post titles in versions up to, and including, 2.5.7. This is due to insufficient input sanitization and output escaping in the lpagery_add_filter_text_template_post() function, which is hooked to admin_footer and echoes the raw post_title of the post referenced by the ?lpagery_template query parameter directly inside a JavaScript single-quoted string literal, without esc_js(), esc_html(), or any other encoding. 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 higher-privileged user (such as an administrator) accesses an admin page with the ?lpagery_template=<post_id> parameter pointing at the attacker's post.
Weakness: CWE-79
Which versions are affected by CVE-2026-15404?
How do I fix CVE-2026-15404?
No fix has been published for CVE-2026-15404 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-2026-15404 being exploited?
There is no known exploitation of CVE-2026-15404 in the wild and no public exploit code.
Sources
Also known as GHSA-8w85-6hx8-qc3f.