Vulnerability in Gainsight Assist

CVE-2026-31381

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

EPSS: 0.000 (2.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Gainsight Assist — versions 0

Weakness classification (CWE)

CWE-598

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-2026-31381?: CVE-2026-31381 is a medium-severity vulnerability in Gainsight Assist, classified under CWE-598. CVSS score: 5.3/10. Published 2026-03-20.
How severe is CVE-2026-31381?: Medium severity. CVSS v3 base score is 5.3 out of 10.