CVE-2024-4000

WordPress Header Builder Plugin – Pearl <= 1.3.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

6.4 Medium

The WordPress Header Builder Plugin – Pearl plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'stm_hb' shortcode in all versions up to, and including, 1.3.6 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.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: Low
Availability: None

Exploit likelihood

0.49%Up 0.4 points since May 3, 2024

What each source reports

CVE List Score used 6.4

WordPress Header Builder Plugin – Pearl <= 1.3.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode

Record: CVE-2024-4000
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

EUVDEUVD-2024-32566 6.4

Record: EUVD-2024-32566
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-3p8g-7v7v-3gxg 6.4

The WordPress Header Builder Plugin – Pearl plugin for WordPress is vulnerable to Stored Cross...

Record: GHSA-3p8g-7v7v-3gxg
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

NVD 6.4

Record: CVE-2024-4000
CVSS 3.1: 6.4 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N
Weakness: CWE-79
Updated: 2026-11-02

Affected products

stylemix pearl – header builder

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2024-4000 is a medium vulnerability (CVSS 6.4) in Stylemix Pearl – Header Builder, published May 2, 2024. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.49%, the 42nd percentile. No source names a fixed version.