Gainsight Assist Reflected XSS via error_description, Safari WAF Bypass
CVE-2026-31382 Published on March 20, 2026

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

Vendor Advisory NVD

Vulnerability Analysis

CVE-2026-31382 is exploitable with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality, with no impact on integrity and availability.

Attack Vector:
NETWORK
Attack Complexity:
LOW
Privileges Required:
NONE
User Interaction:
REQUIRED
Scope:
CHANGED
Confidentiality Impact:
NONE
Integrity Impact:
LOW
Availability Impact:
LOW

Weakness Type

What is a XSS Vulnerability?

The software does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

CVE-2026-31382 has been classified to as a XSS vulnerability or weakness.


Affected Versions

Gainsight Assist Version 0 is unknown by CVE-2026-31382

Exploit Probability

EPSS
0.01%
Percentile
1.76%

EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.