CVE-2026-7526: Smub PDF Embedder – PDF Viewer & Embed PDF Files For WordPress

Medium severity, CVSS 4.3. EPSS: 0.4% chance of exploitation in the next 30 days.

The PDF Embedder plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 4.9.3 via the enqueue_block_assets. This makes it possible for authenticated attackers, with contributor-level access and above, to extract configuration data. License key exposure occurs when the premium add-on is also installed and has saved a key; on Lite-only installations, the exposed data is limited to non-sensitive viewer configuration values such as width, height, toolbar settings, usage tracking, and plan.

Affected products

• Smub PDF Embedder – PDF Viewer & Embed PDF Files For WordPress: up to and including 4.9.3

Published 2026-05-28. Last modified 2026-08-22.