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6.4
Outgrow Plugin for WordPress: Malicious Scripts Can Be Injected
CVE-2026-1889
Summary
The Outgrow plugin for WordPress has a security flaw that allows attackers with contributor-level access or higher to inject malicious scripts into web pages. This can happen when a user accesses a page with a specially crafted shortcode. To protect your site, update the Outgrow plugin to a version newer than 2.1.
Original title
The Outgrow plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' attribute of the 'outgrow' shortcode in all versions up to, and including, 2.1. This is due to insufficien...
Original description
The Outgrow plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'id' attribute of the 'outgrow' shortcode in all versions up to, and including, 2.1. This is due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.
nvd CVSS3.1
6.4
Vulnerability type
CWE-79
Cross-site Scripting (XSS)
Published: 21 Mar 2026 · Updated: 21 Mar 2026 · First seen: 21 Mar 2026