{"affected":[{"product":"highcharts","source":"CNA: GitHub_M","vendor":"highcharts","versions":[{"status":"affected","version":">= 6.1.0, < 11.4.9"},{"status":"affected","version":">= 12.0.0, < 12.6.1"},{"status":"affected","version":">= 13.0.0, < 13.1.0"}]},{"defaultStatus":"unaffected","ecosystem":"npm","packageName":"highcharts","product":"highcharts","source":"OSV GHSA-rmqc-xvr3-v46c","vendor":"","versions":[{"events":[{"introduced":"12.0.0"},{"fixed":"12.6.1"}],"lessThan":"12.6.1","status":"affected","version":"12.0.0","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"npm","packageName":"highcharts","product":"highcharts","source":"OSV GHSA-rmqc-xvr3-v46c","vendor":"","versions":[{"events":[{"introduced":"13.0.0"},{"fixed":"13.1.0"}],"lessThan":"13.1.0","status":"affected","version":"13.0.0","versionType":"semver"}]},{"defaultStatus":"unaffected","ecosystem":"npm","packageName":"highcharts","product":"highcharts","source":"OSV GHSA-rmqc-xvr3-v46c","vendor":"","versions":[{"events":[{"introduced":"6.1.0"},{"fixed":"11.4.9"}],"lessThan":"11.4.9","status":"affected","version":"6.1.0","versionType":"semver"}]}],"cveId":"CVE-2026-118250","cwes":["CWE-1321"],"description":"Highcharts JS is a JavaScript charting library based on SVG. From 6.1.0 until 11.4.9, 12.6.1, and 3.1.0, Highcharts follows dot-separated series.keys paths without filtering each segment. An attacker who controls series.keys and matching point data can use a path through __proto__ to assign arbitrary named properties to Object.prototype. Those properties are visible to all JavaScript in the page, and no user interaction is required beyond rendering the chart. This issue is fixed in 11.4.9, 12.6.1, and 3.1.0.","epss":{"date":"2026-11-02","percentile":0.30147,"score":0.00363},"exploits":[],"kev":null,"metrics":[{"score":7.2,"severity":"high","source":"CNA: GitHub_M","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:L/SI:L/SA:L","version":"4.0"}],"modifiedAt":1793711646636,"publishedAt":1793210388828,"references":[{"source":"CNA: GitHub_M","tags":["x_refsource_CONFIRM"],"url":"https://github.com/highcharts/highcharts/security/advisories/GHSA-rmqc-xvr3-v46c"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/highcharts/highcharts/pull/25313"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/highcharts/highcharts/commit/fd4ee8140732618bbe71295aba55398fb1f8fa9e"},{"source":"CNA: GitHub_M","tags":["x_refsource_MISC"],"url":"https://github.com/highcharts/highcharts/releases/tag/v13.1.0"},{"source":"OSV / GitHub Security Advisories","tags":["advisory"],"url":"https://github.com/advisories/GHSA-rmqc-xvr3-v46c"},{"source":"OSV / GitHub Security Advisories","tags":["osv"],"url":"https://osv.dev/vulnerability/GHSA-rmqc-xvr3-v46c"}],"remediation":[{"kind":"fix","source":"OSV GHSA-rmqc-xvr3-v46c","text":"highcharts (npm): OSV reports a fixed version 12.6.1. Check the advisory for supported release branches.","url":"https://github.com/advisories/GHSA-rmqc-xvr3-v46c"},{"kind":"fix","source":"OSV GHSA-rmqc-xvr3-v46c","text":"highcharts (npm): OSV reports a fixed version 13.1.0. Check the advisory for supported release branches.","url":"https://github.com/advisories/GHSA-rmqc-xvr3-v46c"},{"kind":"fix","source":"OSV GHSA-rmqc-xvr3-v46c","text":"highcharts (npm): OSV reports a fixed version 11.4.9. Check the advisory for supported release branches.","url":"https://github.com/advisories/GHSA-rmqc-xvr3-v46c"}],"revision":"2efa824df4657df3b676ac2f100e9bafa923a22762927d09b465b72a514c24d0","sources":[{"modifiedAt":1793711646636,"name":"CNA: GitHub_M","retrievedAt":1793714939242,"url":"https://www.cve.org/CVERecord?id=CVE-2026-118250"},{"modifiedAt":1793218506104,"name":"OSV / GitHub Security Advisories","retrievedAt":1793714939887,"url":"https://osv.dev/vulnerability/GHSA-rmqc-xvr3-v46c"},{"modifiedAt":null,"name":"FIRST EPSS","retrievedAt":1793714966630,"url":"https://api.first.org/data/v1/epss?cve=CVE-2026-118250"}],"ssvc":{"assessedAt":1793711625474,"automatable":"no","exploitation":"none","source":"ADP: CISA-ADP","technicalImpact":"total"},"status":"published","title":"Highcharts: dotted series.keys paths write to Object.prototype","updatedAt":1793714966630}