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Advisory record · GHSA-rcqf-f6h2-ccg9

Highcharts Dashboards parses sidebar component labels as HTML

CVSS 8.4 HighEPSS 0.0042 · 36th percentile

Published by the GitHub Advisory Database at 28 Oct 2026, 19:56 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
@highcharts/dashboardsnpm>=1.0.0, <4.2.34.2.3
Identifiers
GHSA-rcqf-f6h2-ccg9 · CVE-2026-118252
Weakness (CWE)
CWE-79
Tags
Published
28 Oct 2026
Updated
28 Oct 2026

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Highcharts Dashboards (npm package @highcharts/dashboards, versions from 1.0.0 before 4.2.3) parses the component language strings shown in the edit mode sidebar as HTML instead of inserting them as text. An attacker who can control those language options and get a user to open the edit mode sidebar could run scripts in the origin of the hosting page. Upgrade to version 4.2.3 or later; until then, the source suggests disabling Edit Mode or applying its startup patch.

Written 31 Oct 2026.

Not analysed yet

We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.

Severity and exploitation

ScoreRatingCVSSVectorSource
8.4 High 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N CNA (GitHub_M)
  • CISA KEV Not listed.
  • EPSS 0.0042, the 36th percentile, on 6 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 31 Oct 2026, 13:33 UTC First seen by agentprime
  2. 31 Oct 2026, 13:33 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.