CVE-2026-118244: high-severity vulnerability in highcharts
Highcharts Core: AST `DOMParser` fallback assigns unsanitized markup to `innerHTML` during print
Published
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 7.2epss 0.3%
exploitation probability
0.3%top 73% of all CVEs
observed exploitation
nono source reports it
Highcharts JS is a JavaScript charting library based on SVG. From 12.0.0 until 12.6.1 and 13.1.0, Highcharts falls back to assigning raw markup to innerHTML when DOMParser cannot return a document, before its allow-list is applied. In Chromium, the Trusted Types callback can throw while a beforeprint handler runs, so a page that redraws a chart during beforeprint can insert untrusted HTML text options into the hosting document. Event handlers in that markup then run in the page origin when printing begins. The issue affects HTML-rendered titles, labels, data labels, responsive text, and the Stock, Maps, and Gantt products shipped in the same package. This issue is fixed in 12.6.1 and 13.1.0.
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
Affected products
highcharts · highchartsRelated CVEs — highcharts
In the same product, most dangerous first.
CVE-2021-29489HIGHOptions structure open to XSS if passed unfilteredEPSS 0.9%CVE-2026-118251HIGHHighcharts: javascript: URL in credits.href runs script on clickEPSS 0.4%CVE-2026-118254HIGHHighcharts Grid: pagination language options are parsed as HTMLEPSS 0.4%CVE-2026-118253HIGHHighcharts Dashboards: fullscreen labels are parsed as HTMLEPSS 0.4%CVE-2026-118252HIGHHighcharts Dashboards: sidebar component labels are parsed as HTMLEPSS 0.4%CVE-2026-118250HIGHHighcharts: dotted series.keys paths write to Object.prototypeEPSS 0.4%