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CVE-2026-118248medium6.9

Highcharts Dashboards: editableOptions.propertyPath writes to Object.prototype

Impact

Highcharts Dashboards versions 1.0.0 to 4.2.2 are vulnerable to prototype pollution, allowing an attacker controlling editableOptions to write to Object.prototype. This can have consequences determined by the consuming application. An attacker needs control over editableOptions.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

highcharts · GitHub_M

highcharts

1 range
GitHub_M version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

< 13.1.0

unaffected

unknown

Other versions: unknown

@highcharts · GitHub_M

dashboards

1 range
GitHub_M version evidence

Compare with this publisher’s ranges. This does not inspect your installation.

affected

>= 1.0.0, < 4.2.2

unaffected

unknown

Other versions: unknown

Original source description

Highcharts JS is a JavaScript charting library based on SVG. From 1.0.0 until 4.2.2, Highcharts Dashboards edit mode walks editableOptions propertyPath segments without rejecting prototype-related keys. An attacker who controls editableOptions can provide a path through proto or constructor, and a user's edit writes the configured value onto Object.prototype. The property then becomes visible to JavaScript throughout the page, with consequences determined by the consuming application. This issue is fixed in 4.2.2.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-118248

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-1321 ↗

CWE-1321: Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

GitHub_M

Related →
Contributing organizations · 2
GitHub_M

Assigning organization

2026-10-28
CISA-ADP

Additional data publisher

2026-10-30

What changed

Follow changes
  1. CVE · CVE-2026-118248

    Observed 2026-10-30T18:59:51.817Z · upstream updated 2026-10-30T18:21:14.325Z

    Prioritization updated

    before

    []

    after

    [
  {
    "source": "CISA-ADP",
    "type": "SSVC",
    "role": "CISA Coordinator",
    "timestamp": "2026-10-30T18:21:05.324040Z",
    "decisions": [
      {
        "name": "Exploitation",
        "value": "none"
      },
      {
        "name": "Automatable",
        "value": "no"
      },
      {
        "name": "Technical Impact",
        "value": "partial"
      }
    ]
  }
]

Large field values are marked as truncated previews. Original source snapshots remain retained.

Showing up to 50 most recent observed changes.

References

3 sources
github.com/highcharts/highcharts/security/advisories/GHSA-wg5j-9wp8-2ggm
Security advisoryGitHub_M
github.com/highcharts/highcharts/commit/05efb9849130461fe61992ea8f58d22edaad978b
PatchGitHub_M
github.com/highcharts/highcharts/releases/tag/dashboards-v4.2.2
Release notesGitHub_M