Information disclosure in Smub All In One Seo – Ai Plugin To Boost Rankings & Traffic (Schema, Local Seo, Sitemap Insights)

CVE-2026-109367

The All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights) plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 5.0.3 via the 's' parameter. This makes it possible for unauthenticated attackers to extract arbitrary non-public post meta values, including sensitive custom fields such as API keys and internal notes, emitted verbatim into the HTML title element and JSON-LD SearchResultsPage schema.

Vulnerability class: Information Disclosure

Published .

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.003 (20.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 20.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

The 30-day trend appears once there are two daily scores.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-109367?
CVE-2026-109367 is a medium-severity vulnerability in Smub All In One Seo – Ai Plugin To Boost Rankings & Traffic (Schema, Local Seo, Sitemap Insights), classified under Information Disclosure. CVSS score: 5.3/10. Published 2026-10-31.
How severe is CVE-2026-109367?
Medium severity. CVSS v3 base score is 5.3 out of 10.