CVE-2026-34424 Smart Slider 3 Pro 3.5.1.35 Supply Chain Attack Remote Access Toolkit
Attackers can execute arbitrary code and commands via a compromised update system, establishing backdoors and exfiltrating credentials in Smart Slider 3 Pro.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-34424?
CVE-2026-34424 is a critical vulnerability in Nextendweb Smart Slider 3 Pro for Joomla, published on 9 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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 can trigger pre-authentication remote shell execution via HTTP headers, establish authenticated backdoors accepting arbitrary PHP code or OS commands, create hidden administrator accounts, exfiltrate credentials and access keys, and maintain persistence through multiple injection points including must-use plugins and core file modifications.
Weakness: CWE-506
Which versions are affected by CVE-2026-34424?
How do I fix CVE-2026-34424?
No fix has been published for CVE-2026-34424 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-34424 being exploited?
There is no known exploitation of CVE-2026-34424 in the wild and no public exploit code.
Sources
Also known as GHSA-37pc-8f3j-hpmr.