XSS in Creativethemes Blocksy
CVE-2024-5439
The Blocksy theme for WordPress is vulnerable to Reflected Cross-Site Scripting via the custom_url parameter in all versions up to, and including, 2.0.50 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.003 (21.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.
Affected products
- Creativethemes Blocksy
- Creativethemeshq Blocksy — versions 0
Weakness classification (CWE)
References
- security@wordfence.com (Third Party Advisory)
- security@wordfence.com (Patch)
Frequently asked questions
- What is CVE-2024-5439?
- CVE-2024-5439 is a medium-severity vulnerability in Creativethemes Blocksy, classified under Improper Input Validation. CVSS score: 6.4/10. Published 2024-06-05.
- How severe is CVE-2024-5439?
- Medium severity. CVSS v3 base score is 6.4 out of 10.