Medium severity · published Oct 3, 2026
CVE-2026-100152
All in One SEO <= 5.0.2 - Unauthenticated Arbitrary Shortcode Execution via 's' Search Query Parameter
6.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
Low
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 29% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
AI
All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights) · smub
through 5.0.2 · source: vendor
Affected product
AI
All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights)
smub
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-100152
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-100152
www.wordfence.com
https://www.wordfence.com/threat-intel/vulnerabilities/id/9fa47d2b-e9a9-4d1b-b933-fd4aa453ba1a?source=cve
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/all-in-one-seo-pack/tags/5.0.2/app/Common/Breadcrumbs/Frontend.php#L280
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/all-in-one-seo-pack/tags/5.0.2/app/Common/Breadcrumbs/Frontend.php#L104
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/all-in-one-seo-pack/tags/5.0.2/app/Common/Breadcrumbs/Breadcrumbs.php#L242
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/all-in-one-seo-pack/tags/5.0.2/app/Common/Breadcrumbs/Tags.php#L108
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/changeset/3723760/all-in-one-seo-pack/trunk/app/Common/Breadcrumbs/Frontend.php?old=3709877&old_path=all-in-one-seo-pack%2Ftrunk%2Fapp%2FCommon%2FBreadcrumbs%2FFrontend.php
More from All in One SEO – AI SEO Plugin to Boost SEO Rankings & Traffic (Schema, Local SEO, Sitemap & SEO Insights)
6.1
CVE-2026-85492
All in One SEO <= 5.0.1.1 - Reflected DOM-Based Cross-Site Scripting via URL Pathname