CVE-2026-116797
Description
A flaw was found in Highcharts Grid Pro. Cross-Site Scripting (XSS) can occur when an attacker who controls table column configurations injects malicious event-handler attributes into rendered input elements. When a user interacts with or edits an affected cell, the injected script executes in their browser within the context of the hosting application. This can allow an attacker to perform unauthorized actions or compromise sensitive session data.
Statement
Red Hat rates this vulnerability as having a Moderate severity impact because exploitation requires the ability to provide untrusted column configurations and depends on user interaction to execute arbitrary JavaScript in the victim's browser. The issue is restricted to the client-side web presentation layer, preventing direct compromise of the underlying operating system or server infrastructure. Consequently, the blast radius is confined to the application origin and session of the viewing user.
Mitigation
Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.
Common Vulnerability Scoring System (CVSS) Score Details
Info alert:Important note
CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).
The following CVSS metrics and score provided are preliminary and subject to review.
CVSS v3 Score Breakdown
| Red Hat | NVD | cve.org | |
|---|---|---|---|
| Base Score | 5.4 | N/A | N/A |
| Attack Vector | Network | N/A | N/A |
| Attack Complexity | Low | N/A | N/A |
| Privileges Required | Low | N/A | N/A |
| User Interaction | Required | N/A | N/A |
| Scope | Changed | N/A | N/A |
| Confidentiality | Low | N/A | N/A |
| Integrity Impact | Low | N/A | N/A |
| Availability Impact | None | N/A | N/A |
Vector
Red Hat: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
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