What’s Vulnerable › Vulnerabilities

CVE-2024-3338: Colibri Page Builder <= 1.0.262 - Authenticated (Author+) Stored Cross-Site Scripting

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-05-02 · updated 2026-06-17
• Weakness: CWE-79

Description

The Colibri Page Builder plugin for WordPress is vulnerable to Stored Cross-Site Scripting via image alt data parameter in all versions up to, and including, 1.0.262 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• extendthemes Colibri Page Builder: before 1.0.274 — fixed in 1.0.274

How to fix

Upgrade to a fixed version: extendthemes Colibri Page Builder 1.0.274. Check the vendor advisory for mitigations.

References

• https://plugins.trac.wordpress.org/changeset/3074785/colibri-page-builder/trunk/extend-builder/extend-builder.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/3a066eae-4040-4d76-b730-47d98dc37662?source=cve
• https://plugins.trac.wordpress.org/changeset/3074785/colibri-page-builder/trunk/extend-builder/extend-builder.php
• https://www.wordfence.com/threat-intel/vulnerabilities/id/3a066eae-4040-4d76-b730-47d98dc37662?source=cve

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