CVE-2026-31382

Gainsight Assist reflected XSS/HTML injection

State: Published
Severity: 6.1 Medium
Published: Mar 20, 2026
Updated: Mar 23, 2026
Reserved: Mar 9, 2026

Description

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

Scores

CVSS	Score	Vector	Source
3.1	6.1 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:L	rapid7

Weaknesses

CWE-79 Improper neutralization of input during web page generation ('cross-site scripting')

Affected Products

Product	Versions
Gainsight AssistGainsight	0Unknown

References

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

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