CVE-2026-31381

Gainsight Assist plugin information disclosure

State: Published
Severity: 5.3 Medium
Published: Mar 20, 2026
Updated: Mar 23, 2026
Reserved: Mar 9, 2026

Description

An attacker can extract user email addresses (PII) exposed in base64 encoding via the state parameter in the OAuth callback URL.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N	rapid7

Weaknesses

CWE-598 Use of GET request method with sensitive query strings

Affected Products

Product	Versions
Gainsight AssistGainsight	0Unknown

References

http://www.rapid7.com/blog/post/ve-cve-2026-31381-cve-2026-31382-gainsight-assist-information-disclosure-xss-fixedthird-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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