CVE-2026-31382 PUBLISHED

Gainsight Assist reflected XSS/HTML injection

Assigner: rapid7
Reserved: 09.03.2026 Published: 20.03.2026 Updated: 20.03.2026

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

Metrics

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

Product Status

Vendor Gainsight
Product Gainsight Assist
Versions Default: unaffected
  • Version 0 is unknown

Credits

  • Christopher O’Boyle, Cybersecurity Advisor at Rapid7 finder

References

Problem Types

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