smub All in One SEO Plugin up to 5.0.2 on WordPress Shortcode do_shortcode code injection

Summaryinfo

A vulnerability was found in smub All in One SEO Plugin up to 5.0.2. It has been classified as critical. This issue affects the function do_shortcode of the component Shortcode Handler. The manipulation leads to code injection. This vulnerability is referenced as CVE-2026-100152. Remote exploitation of the attack is possible. No exploit is available.

Detailsinfo

A vulnerability was found in smub All in One SEO Plugin up to 5.0.2 and classified as critical. This issue affects the function do_shortcode of the component Shortcode Handler. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

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.

The advisory is shared at wordfence.com. The identification of this vulnerability is CVE-2026-100152 since 09/25/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/03/2026). MITRE ATT&CK project uses the attack technique T1059 for this issue.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Type

• WordPress Plugin

Vendor

• smub

Name

• All in One SEO Plugin

Version

• 5.0.0
• 5.0.1
• 5.0.2

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CPE 2.2info

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