CVE-2026-15758 3D FlipBook <= 1.16.20 - Unauthenticated Sensitive Information Exposure in 'id' Parameter
Unauthenticated attackers can extract sensitive metadata and PDF URLs from password-protected flipbooks in the 3D FlipBook WordPress plugin.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15758?
CVE-2026-15758 is a medium-severity vulnerability in iberezansky 3D FlipBook – PDF Embedder, PDF Flipbook Viewer, Flipbook Image Gallery, published on 15 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The 3D FlipBook – PDF Embedder, PDF Flipbook Viewer, Flipbook Image Gallery plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 1.16.20 via the 'id' parameter. This makes it possible for unauthenticated attackers to extract sensitive data including the full metadata payload of password-protected flipbooks — including title, outline, props, and the serialized data blob containing the underlying PDF file's direct URL — bypassing WordPress post-password confidentiality. Flipbook post IDs can be pre-enumerated via the also-unauthenticated fb3d_send_posts AJAX action, requiring no prior knowledge to target specific flipbooks.
Weakness: CWE-200
Which versions are affected by CVE-2026-15758?
How do I fix CVE-2026-15758?
No fix has been published for CVE-2026-15758 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-15758 being exploited?
There is no known exploitation of CVE-2026-15758 in the wild and no public exploit code.
Sources
Also known as GHSA-8hcp-m735-89f4.