CVE-2026-31382 Gainsight Assist reflected XSS/HTML injection
Attackers can execute arbitrary scripts via reflected XSS in the error_description parameter, potentially leading to session hijacking or data theft.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-31382?
CVE-2026-31382 is a medium-severity cross-site scripting vulnerability in Gainsight Assist, published on 20 Mar 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
The error_description parameter is vulnerable to Reflected XSS. An attacker can bypass the domain's WAF using a Safari-specific onpagereveal payload.
Weakness: CWE-79
Which versions are affected by CVE-2026-31382?
It affects 1 product.
Products include Gainsight Assist.
How do I fix CVE-2026-31382?
No fix has been published for CVE-2026-31382 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-2026-31382 being exploited?
There is no known exploitation of CVE-2026-31382 in the wild and no public exploit code.
Other vulnerabilities in Gainsight Assist
Sources
Also known as GHSA-gg42-9683-x2xj.