CVE-2026-31382CWE-79

Gainsight Assist reflected XSS/HTML injection

Medium · published March 20, 2026

CVSS v3.1
6.1
EPSS
0%
Percentile
20.8
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS v3.1
6.1 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:L
CVSS v4.0
Not supplied
EPSS
0.00293 · 20.8th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-03-20T13:04Z
EPSS history
Timeline
  • 20 MAR 13:04Z
    Gainsight Assist reflected XSS/HTML injection
    cvelistv5