CVE-2026-118250

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Source
https://cve.org/CVERecord?id=CVE-2026-118250
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-118250.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-118250
Aliases
Published
2026-10-28T17:59:48Z
Modified
2026-10-29T02:48:31Z
Severity
  • 7.2 (High) CVSS_V4 - 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 CVSS Calculator
Summary
Highcharts: dotted series.keys paths write to Object.prototype
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.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-1321"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/118xxx/CVE-2026-118250.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "introduced":  "6.1.0"
                        },
                        {
                            "fixed":  "11.4.9"
                        },
                        {
                            "introduced":  "12.0.0"
                        },
                        {
                            "fixed":  "12.6.1"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "StringRangeExpression"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/highcharts/highcharts

Affected ranges

Type
GIT
Repo
https://github.com/highcharts/highcharts
Events
Introduced
e44b0e19db9affdb85b667524365d268c314b957
Fixed
5d3e905ce2e2c75c174c06cf8dee0f00a5e02841
Fixed
fd4ee8140732618bbe71295aba55398fb1f8fa9e
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "13.0.0"
                },
                {
                    "fixed":  "13.1.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StringRangeExpression"
        },
        {
            "range":  [
                {
                    "fixed":  "fd4ee8140732618bbe71295aba55398fb1f8fa9e"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        },
        {
            "original_tag":  "v13.1.0",
            "range":  [
                {
                    "fixed":  "5d3e905ce2e2c75c174c06cf8dee0f00a5e02841"
                }
            ],
            "source":  "REFERENCES_TAG"
        }
    ]
}

Affected versions

dashboards-v4.*
dashboards-v4.2.1
dashboards-v4.2.2
grid-v3.*
grid-v3.1.0
grid-v3.2.0
v13.*
v13.0.0
v13.0.1
v13.0.2

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-118250.json"