All in One SEO – Powerful SEO Plugin to Boost SEO Rankings & Increase Traffic: Sensitive information exposure

All in One SEO – Powerful SEO Plugin to Boost SEO Rankings & Increase Traffic 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 <= 4.9.7.

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

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

Component: All in One SEO – Powerful SEO Plugin to Boost SEO Rankings & Increase Traffic
Plugin slug: all-in-one-seo
Affected: <= 4.9.7
Safe version: See mitigation notes
Published: May 20, 2026
Weakness: CWE-200 — Exposure of Sensitive Information to an Unauthorized Actor

This CVE was published May 20, 2026 and is one of 9 known issues for this plugin.

What to do

Update, patch or deactivate.

No fixed release is identified. Update All in One SEO – Powerful SEO Plugin to Boost SEO Rankings & Increase Traffic when a release after 4.9.7 becomes available; until then, disable and remove it when the site's risk warrants.

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 All in One SEO plugin for WordPress is vulnerable to Sensitive Information Exposure via 'internalOptions' localized script data in versions up to, and including, 4.9.7 due to sensitive internal option data being passed to wp_localize_script() in post editor contexts without effective masking for low-privilege users. This makes it possible for authenticated attackers, with contributor-level access and above, to view configured API/OAuth tokens and license-related values from page source.

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

Data attribution: This product uses the NVD API but is not endorsed or certified by the NVD.

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