PDF Embedder – PDF Viewer & Embed PDF Files for WordPress: Sensitive information exposure

PDF Embedder – PDF Viewer & Embed PDF Files for WordPress is affected by sensitive information exposure. Exploitation requires an authenticated contributor account. Successful exploitation can disclose data that should not be available to the caller. The published affected range is <= 4.9.3.

CVE / CNA score 4.3 CVSS 3.1 · security@wordfence.com

NVD score Pending NVD has not published its own CVSS assessment.

Component: PDF Embedder – PDF Viewer & Embed PDF Files for WordPress
Plugin slug: pdf-embedder
Affected: <= 4.9.3
Safe version: See mitigation notes
Published: May 28, 2026
Weakness: CWE-200 — Exposure of Sensitive Information to an Unauthorized Actor

This CVE was published May 28, 2026 and is one of 3 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified. Update PDF Embedder – PDF Viewer & Embed PDF Files for WordPress when a release after 4.9.3 becomes available; until then, disable and remove it when the site's risk warrants. The official upstream changelog lists version 5.0.2, which is newer than the published affected range. Its changelog does not clearly confirm this specific fix, so it is not counted as a known-safe release.

No confirmed safe version is listed. Consider a vendor-supported patch or temporarily restricting the affected functionality while you assess the risk.

Deactivate only when warranted by your risk profile, or when advised by your hosting provider in the limited circumstances where the vulnerability cannot otherwise be mitigated. If you’re unsure which action is appropriate, contact Fused or your hosting provider for guidance.

Source record

Technical 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.

CVE / CNA vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

References

Primary and upstream sources

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