Vulnerability in Nextendweb Smart Slider 3 Pro For Joomla
CVE-2026-34424
Smart Slider 3 Pro version 3.5.1.35 for WordPress and Joomla contains a multi-stage remote access toolkit injected through a compromised update system that allows unauthenticated attackers to execute arbitrary code and commands. Attackers…
EPSS: 0.003 (57.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Nextendweb Smart Slider 3 Pro For Joomla — versions 3.5.1.35, 0, 3.5.1.36
- Nextendweb Smart Slider 3 Pro For Wordpress — versions 3.5.1.35, 0, 3.5.1.36
Weakness classification (CWE)
References
- smartslider.helpscoutdocs.com/article/2144-wordpress-security-advisory-smart-sl… (vendor-advisory, patch)
- smartslider.helpscoutdocs.com/article/2143-joomla-security-advisory-smart-slide… (vendor-advisory, patch)
- patchstack.com/database/wordpress/plugin/nextend-smart-slider3-pro/vulnerabilit… (third-party-advisory)
- patchstack.com/articles/critical-supply-chain-compromise-in-smart-slider-3-pro-… (technical-description)
- mysites.guru/blog/smart-slider-3-pro-supply-chain-compromise/ (technical-description)
Frequently asked questions
- What is CVE-2026-34424?
- CVE-2026-34424 is a critical-severity vulnerability in Nextendweb Smart Slider 3 Pro For Joomla, classified under CWE-506. CVSS score: 9.8/10. Published 2026-04-09.
- How severe is CVE-2026-34424?
- Critical severity. CVSS v3 base score is 9.8 out of 10.