CVE-2026-2569 Dear Flipbook <= 2.4.20 - Authenticated (Auhtor+) Stored Cross-Site Scripting via PDF Page Labels
Authenticated attackers with Author access can inject arbitrary scripts via PDF page labels, leading to stored XSS execution for other users.
- 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-2026-2569?
CVE-2026-2569 is a medium-severity cross-site scripting vulnerability in dearhive Dear Flipbook – PDF Flipbook, 3D Flipbook, PDF embed, PDF viewer, published on 10 Mar 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The Dear Flipbook – PDF Flipbook, 3D Flipbook, PDF embed, PDF viewer plugin for WordPress is vulnerable to Stored Cross-Site Scripting via PDF page labels in all versions up to, and including, 2.4.20 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with Author-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-2026-2569?
How do I fix CVE-2026-2569?
No fix has been published for CVE-2026-2569 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-2026-2569 being exploited?
There is no known exploitation of CVE-2026-2569 in the wild and no public exploit code.
Sources
Also known as GHSA-vxj8-gcrq-pf8h.