CVE-2026-31382
Received Received - Intake
Reflected XSS in error_description Parameter Bypasses Safari WAF

Publication date: 2026-03-20

Last updated on: 2026-04-16

Assigner: Rapid7, Inc.

Description
The error_description parameter is vulnerable to Reflected XSS. An attacker can bypass the domain's WAF using a Safari-specific onpagereveal payload.
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Meta Information
Published
2026-03-20
Last Modified
2026-04-16
Generated
2026-06-16
AI Q&A
2026-03-20
EPSS Evaluated
2026-06-15
NVD
CVE-2026-31382
EUVD
EUVD-2026-13686
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
gainsight assist *
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Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product 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.
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Impact Analysis

The vulnerability can lead to limited integrity and availability impacts, as indicated by the CVSS score.

An attacker exploiting this Reflected XSS could execute malicious scripts in the context of the victim's browser, potentially leading to unauthorized actions or disruption.

Compliance Impact

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Detection Guidance

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Executive Summary

This vulnerability involves the error_description parameter being susceptible to Reflected Cross-Site Scripting (XSS).

An attacker can exploit this by injecting malicious scripts that are reflected back to the user, potentially bypassing the domain's Web Application Firewall (WAF) using a Safari-specific onpagereveal payload.

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