CVE-2026-118250

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{"bugzilla": {"description": "highcharts: Highcharts: Prototype pollution via unfiltered series keys", "id": "2565783", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2565783"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.3", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L", "status": "draft"}, "cwe": "CWE-915", "details": ["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.", "A flaw was found in Highcharts. An attacker who controls chart series keys and data points can cause prototype pollution (unauthorized modification of base JavaScript objects) by providing dot-separated property paths. When the chart is rendered, the injected properties become accessible to all JavaScript running on the page without requiring any additional user interaction. This can disrupt application logic, corrupt data, or result in a denial of service."], "mitigation": {"lang": "en:us", "value": "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."}, "name": "CVE-2026-118250", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Not affected", "package_name": "rust", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "rust-toolset:rhel8/rust", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Not affected", "package_name": "rust", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:enterprise_linux_ai:3", "fix_state": "Not affected", "package_name": "rust", "product_name": "Red Hat Enterprise Linux AI (RHEL AI) 3"}], "public_date": "2026-10-28T17:59:48Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-118250\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-118250\nhttps://github.com/highcharts/highcharts/commit/fd4ee8140732618bbe71295aba55398fb1f8fa9e\nhttps://github.com/highcharts/highcharts/pull/25313\nhttps://github.com/highcharts/highcharts/releases/tag/v13.1.0\nhttps://github.com/highcharts/highcharts/security/advisories/GHSA-rmqc-xvr3-v46c"], "statement": "Red Hat Product Security rates this vulnerability as Moderate because exploitation requires an attacker to supply maliciously crafted charting configurations to a web application, and the resulting prototype pollution is confined to the client-side browser runtime. In typical deployments, client-side graphing components do not expose backend services to direct compromise or privilege escalation. An attacker must have the ability to influence key paths and coordinate chart data points, and any secondary consequences depend entirely on how other frontend scripts interact with the modified object prototype.", "threat_severity": "Moderate"}

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