CVE-2026-31382

Gainsight Assist reflected XSS/HTML injection

CVSS 6.1 MEDIUMEPSS 0.2%CWE-79

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

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:L

Affected products

Gainsight · Gainsight Assist

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References

https://communities.gainsight.com/community-news-2/recent-gainsight-assist-plugin-remediations-cve-2026-31381-and-cve-2026-31382-30587 https://www.rapid7.com/blog/post/ve-cve-2026-31381-cve-2026-31382-gainsight-assist-information-disclosure-xss-fixed/