CVE-2026-94378 SupportCandy <= 3.5.3 - Authenticated (Subscriber+) Stored Cross-Site Scripting via 'name' Parameter
Authenticated attackers can inject arbitrary scripts via the name parameter in SupportCandy, executing them when users view pages.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-94378?
CVE-2026-94378 is a medium-severity cross-site scripting vulnerability in psmplugins SupportCandy – AI Customer Support Ticket System & Live Chatbot Agent, published on 3 Oct 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
The SupportCandy – AI Customer Support Ticket System & Live Chatbot Agent plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'name' parameter in all versions up to, and including, 3.5.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This exploit chain requires the 'Register user if not exists' setting to be disabled, which is its default configuration.
Weakness: CWE-79
Which versions are affected by CVE-2026-94378?
How do I fix CVE-2026-94378?
No fix has been published for CVE-2026-94378 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-94378 being exploited?
There is no known exploitation of CVE-2026-94378 in the wild and no public exploit code.
Sources
Also known as GHSA-8cxj-g538-75wh.