CVE-2026-100152: All in One SEO <= 5.0.2 - Unauthenticated Arbitrary Shortcode Execution via 's' Search Query Parameter

Vulnerability summary

CVE-2026-100152 is a medium (CVSS 6.5) Code Injection vulnerability in smub all in one seo – ai seo plugin to boost seo rankings & traffic (schema, local seo, sitemap & seo insights). EPSS estimates a 0.36% chance of exploitation in the next 30 days, higher than 28.1% of scored vulnerabilities. Fixed in 5.0.2.1.

Timeline

1. 03-10-2026
   PublishedVulnerability first disclosed.
2. 03-10-2026
   Last modifiedVulnerability information updated.

Description

The 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 arbitrary shortcode execution in all versions up to, and including, 5.0.2 This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes. This requires the AIOSEO breadcrumb to be rendered on the search results page via the block, widget, shortcode, or template tag.

• CWE-94Improper Control of Generation of Code ('Code Injection')The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.