CVE-2025-3840 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Attackers can inject malicious scripts via the login form action parameter in the deprecated Saviynt Connect installer, potentially leading to XSS attacks.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2025-3840?
CVE-2025-3840 is a low-severity cross-site scripting vulnerability in Saviynt OVA based Connect, published on 21 Apr 2025. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
An improper neutralization of input vulnerability was identified in the End of Life (EOL) OVA based connect installer component which is deployed for installation purposes in a customer network. This EOL component was deprecated in September 2023 with end of support extended till January 2024. An actor can manipulate the action parameter of the login form to inject malicious scripts which would lead to a XSS attack under certain conditions.
Weakness: CWE-79
Which versions are affected by CVE-2025-3840?
How do I fix CVE-2025-3840?
No fix has been published for CVE-2025-3840 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-2025-3840 being exploited?
There is no known exploitation of CVE-2025-3840 in the wild and no public exploit code.
Sources
Also known as GHSA-rx59-94qj-gp9f.