CVE-2026-31382
Reflected XSS in error_description Parameter Bypasses Safari WAF
Publication date: 2026-03-20
Last updated on: 2026-04-16
Assigner: Rapid7, Inc.
Description
Description
CVSS Scores
EPSS Scores
| Probability: | |
| Percentile: |
Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| gainsight | assist | * |
Helpful Resources
Exploitability
| 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. |
Attack-Flow Graph
AI Powered Q&A
What immediate steps should I take to mitigate this vulnerability?
I don't know
How can this vulnerability impact me? :
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.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
I don't know
Can you explain this vulnerability to me?
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.