CVE-2026-118252

high

Description

Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.3, Highcharts Dashboards edit-mode sidebar parses component language strings as HTML rather than inserting them as text. An attacker who controls the Dashboards language configuration can provide markup containing event handlers, which execute in the hosting page origin when a user opens the edit-mode sidebar and the affected labels render. This issue is fixed in 4.2.3.

References

https://github.com/highcharts/highcharts/security/advisories/GHSA-rcqf-f6h2-ccg9

https://github.com/highcharts/highcharts/releases/tag/dashboards-v4.2.3

https://github.com/highcharts/highcharts/commit/e65f8c21b9974dcccfa1c600a375d836acef4a7d

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-112367

Details

Source: Mitre, NVD

Published: 2026-10-28

Updated: 2026-10-29

Risk Information

CVSS v2

Base Score: 4.3

Vector: CVSS2#AV:N/AC:M/Au:N/C:N/I:P/A:N

Severity: Medium

CVSS v3

Base Score: 6.1

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Severity: Medium

CVSS v4

Base Score: 8.4

Vector: 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

Severity: High

EPSS

EPSS: 0.00419