What is CVE-2026-31382?

CVE-2026-31382 is a medium-severity vulnerability in Gainsight Assist, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-20.

How severe is CVE-2026-31382?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Gainsight Assist

CVE-2026-31382

The error_description parameter is vulnerable to Reflected XSS. An attacker can bypass the domain's WAF using a Safari-specific onpagereveal payload.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (4.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:L.

Affected products

Gainsight Assist — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.rapid7.com/blog/post/ve-cve-2026-31381-cve-2026-31382-gainsight-assist-info… (third-party-advisory)
communities.gainsight.com/community-news-2/recent-gainsight-assist-plugin-remed… (vendor-advisory)

Frequently asked questions

What is CVE-2026-31382?: CVE-2026-31382 is a medium-severity vulnerability in Gainsight Assist, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2026-03-20.
How severe is CVE-2026-31382?: Medium severity. CVSS v3 base score is 6.1 out of 10.