Vulnerability-Lookup

CVE-2026-118244 (GCVE-0-2026-118244)

Vulnerability from cvelistv5 – Published: 2026-10-28 17:36 – Updated: 2026-10-28 17:36

Title

Highcharts Core: AST `DOMParser` fallback assigns unsanitized markup to `innerHTML` during print

Summary

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.

Severity

7.2 (High)


                        
                          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

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

GitHub_M CNA under the mitre root

CNA scorecard C 72/100 over 7978 records in the last 180 days details

References

3 references

URL	Tags
https://github.com/highcharts/highcharts/security…	x_refsource_CONFIRM
https://github.com/highcharts/highcharts/commit/a…	x_refsource_MISC
https://github.com/highcharts/highcharts/releases…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version	CPE status
highcharts	highcharts	Affected: >= 12.0.0, < 12.6.1 Affected: >= 13.0.0, < 13.1.0	guessed

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "highcharts",
          "vendor": "highcharts",
          "versions": [
            {
              "status": "affected",
              "version": "\u003e= 12.0.0, \u003c 12.6.1"
            },
            {
              "status": "affected",
              "version": "\u003e= 13.0.0, \u003c 13.1.0"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "NETWORK",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
            "userInteraction": "ACTIVE",
            "vectorString": "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",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79: Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-28T17:36:43.768Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/highcharts/highcharts/security/advisories/GHSA-65hg-cf3f-5m39",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/highcharts/highcharts/security/advisories/GHSA-65hg-cf3f-5m39"
        },
        {
          "name": "https://github.com/highcharts/highcharts/commit/abde7c576793bf50b0e0636e59b49630de6dd0d5",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/highcharts/highcharts/commit/abde7c576793bf50b0e0636e59b49630de6dd0d5"
        },
        {
          "name": "https://github.com/highcharts/highcharts/releases/tag/v13.1.0",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/highcharts/highcharts/releases/tag/v13.1.0"
        }
      ],
      "source": {
        "advisory": "GHSA-65hg-cf3f-5m39",
        "discovery": "UNKNOWN"
      },
      "title": "Highcharts Core: AST `DOMParser` fallback assigns unsanitized markup to `innerHTML` during print"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-118244",
    "datePublished": "2026-10-28T17:36:43.768Z",
    "dateReserved": "2026-10-27T20:13:55.312Z",
    "dateUpdated": "2026-10-28T17:36:43.768Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-118244",
      "date": "2026-10-29",
      "epss": "0.00337",
      "percentile": "0.27102"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "product": "highcharts",
                "vendor": "highcharts",
                "versions": [
                  {
                    "status": "affected",
                    "version": "\u003e= 12.0.0, \u003c 12.6.1"
                  },
                  {
                    "status": "affected",
                    "version": "\u003e= 13.0.0, \u003c 13.1.0"
                  }
                ]
              }
            ],
            "source": "security-advisories@github.com"
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "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."
          }
        ],
        "id": "CVE-2026-118244",
        "lastModified": "2026-10-29T15:08:43.210",
        "metrics": {
          "cvssMetricV40": [
            {
              "cvssData": {
                "Automatable": "NOT_DEFINED",
                "Recovery": "NOT_DEFINED",
                "Safety": "NOT_DEFINED",
                "attackComplexity": "LOW",
                "attackRequirements": "PRESENT",
                "attackVector": "NETWORK",
                "availabilityRequirement": "NOT_DEFINED",
                "baseScore": 7.2,
                "baseSeverity": "HIGH",
                "confidentialityRequirement": "NOT_DEFINED",
                "exploitMaturity": "NOT_DEFINED",
                "integrityRequirement": "NOT_DEFINED",
                "modifiedAttackComplexity": "NOT_DEFINED",
                "modifiedAttackRequirements": "NOT_DEFINED",
                "modifiedAttackVector": "NOT_DEFINED",
                "modifiedPrivilegesRequired": "NOT_DEFINED",
                "modifiedSubAvailabilityImpact": "NOT_DEFINED",
                "modifiedSubConfidentialityImpact": "NOT_DEFINED",
                "modifiedSubIntegrityImpact": "NOT_DEFINED",
                "modifiedUserInteraction": "NOT_DEFINED",
                "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
                "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
                "modifiedVulnIntegrityImpact": "NOT_DEFINED",
                "privilegesRequired": "LOW",
                "providerUrgency": "NOT_DEFINED",
                "subAvailabilityImpact": "NONE",
                "subConfidentialityImpact": "LOW",
                "subIntegrityImpact": "LOW",
                "userInteraction": "ACTIVE",
                "valueDensity": "NOT_DEFINED",
                "vectorString": "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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
                "version": "4.0",
                "vulnAvailabilityImpact": "NONE",
                "vulnConfidentialityImpact": "HIGH",
                "vulnIntegrityImpact": "HIGH",
                "vulnerabilityResponseEffort": "NOT_DEFINED"
              },
              "source": "security-advisories@github.com",
              "type": "Secondary"
            }
          ]
        },
        "published": "2026-10-28T18:17:15.260",
        "references": [
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/highcharts/highcharts/commit/abde7c576793bf50b0e0636e59b49630de6dd0d5"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/highcharts/highcharts/releases/tag/v13.1.0"
          },
          {
            "source": "security-advisories@github.com",
            "url": "https://github.com/highcharts/highcharts/security/advisories/GHSA-65hg-cf3f-5m39"
          }
        ],
        "sourceIdentifier": "security-advisories@github.com",
        "vulnStatus": "Awaiting Analysis",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-79"
              }
            ],
            "source": "security-advisories@github.com",
            "type": "Primary"
          }
        ]
      }
    }
  }
}

GHSA-65HG-CF3F-5M39

Vulnerability from github – Published: 2026-10-28 19:55 – Updated: 2026-10-28 19:55

Summary

Highcharts Core: HTML text parsing falls back to unfiltered `innerHTML` during printing

Details

Impact

When the HTML text parser cannot obtain a document from DOMParser because the call throws, it falls back to assigning the raw markup to the innerHTML of an element created in the hosting document, and the allow-list is applied only to the resulting DOM afterwards. In Chromium the Trusted Types policy callback that the parser uses throws while a beforeprint handler is running, so if the hosting page re-renders the chart from a beforeprint handler, every HTML-rendered text option parsed at that moment, such as useHTML titles, axis labels and data labels or text set by responsive rules, is inserted unsanitized, and event handlers embedded in that markup run in the origin of the page hosting the chart. Exploitation requires that untrusted data reach the chart configuration, that the hosting page update the chart from a beforeprint handler in Chromium, and that printing be started, which the print item of the exporting menu does on its own. Charts built with Highcharts Stock, Maps and Gantt are included, since those ship from the same package as Core.

Workarounds

Drop-in fix - for any versions affected (12.0.0-13.0.2). Add the below IIFE to run after Highcharts is loaded.

((n)=>{n.AST.prototype.parseMarkup=function parseMarkup(t){let e,i=[];t=t.trim().replace(/ style=(["'])/g," data-style=$1");try{e=new DOMParser().parseFromString(tI?tI.createHTML(t):t,"text/html")}catch{}if(!e)try{e=new DOMParser().parseFromString(t,"text/html")}catch{}e||((e=n.doc.implementation.createHTMLDocument("")).body.innerHTML=t);let s=(t,e)=>{let i=t.localName||t.nodeName.toLowerCase(),o={tagName:i};"#text"===i&&(o.textContent=t.textContent||"");let r=t.attributes;if(r){let t={};[].forEach.call(r,e=>{"data-style"===e.name?o.style=tB.parseStyle(e.value):t[e.name]=e.value}),o.attributes=t}if(t.childNodes.length){let e=[];[].forEach.call(t.childNodes,t=>{s(t,e)}),e.length&&(o.children=e)}e.push(o)};return[].forEach.call(e.body.childNodes,t=>s(t,i)),i};})(Highcharts);

Live demo & testing

Obtaining the patched version

The patched releases are available from all the usual distribution channels. With npm, upgrade the affected package to the patched version listed above, for example npm install highcharts@13.1.0. If you load Highcharts from the CDN, use the versioned URLs on code.highcharts.com, for example https://code.highcharts.com/13.1.0/highcharts.js. For more on each installation method, see the installation guide.

Severity

7.2 (High)


                  
                    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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "npm",
        "name": "highcharts"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "12.0.0"
            },
            {
              "fixed": "12.6.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 13.0.2"
      },
      "package": {
        "ecosystem": "npm",
        "name": "highcharts"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "13.0.0"
            },
            {
              "fixed": "13.1.0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-118244"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-10-28T19:55:22Z",
    "nvd_published_at": "2026-10-28T18:17:15Z",
    "severity": "HIGH"
  },
  "details": "### Impact\nWhen the HTML text parser cannot obtain a document from `DOMParser` because the call throws, it falls back to assigning the raw markup to the `innerHTML` of an element created in the hosting document, and the allow-list is applied only to the resulting DOM afterwards. In Chromium the Trusted Types policy callback that the parser uses throws while a `beforeprint` handler is running, so if the hosting page re-renders the chart from a `beforeprint` handler, every HTML-rendered text option parsed at that moment, such as `useHTML` titles, axis labels and data labels or text set by responsive rules, is inserted unsanitized, and event handlers embedded in that markup run in the origin of the page hosting the chart. Exploitation requires that untrusted data reach the chart configuration, that the hosting page update the chart from a `beforeprint` handler in Chromium, and that printing be started, which the print item of the exporting menu does on its own. Charts built with Highcharts Stock, Maps and Gantt are included, since those ship from the same package as Core.\n\n### Workarounds\n**Drop-in fix - for any versions affected (12.0.0-13.0.2).**\nAdd the below IIFE to run after Highcharts is loaded. \n```\n((n)=\u003e{n.AST.prototype.parseMarkup=function parseMarkup(t){let e,i=[];t=t.trim().replace(/ style=([\"\u0027])/g,\" data-style=$1\");try{e=new DOMParser().parseFromString(tI?tI.createHTML(t):t,\"text/html\")}catch{}if(!e)try{e=new DOMParser().parseFromString(t,\"text/html\")}catch{}e||((e=n.doc.implementation.createHTMLDocument(\"\")).body.innerHTML=t);let s=(t,e)=\u003e{let i=t.localName||t.nodeName.toLowerCase(),o={tagName:i};\"#text\"===i\u0026\u0026(o.textContent=t.textContent||\"\");let r=t.attributes;if(r){let t={};[].forEach.call(r,e=\u003e{\"data-style\"===e.name?o.style=tB.parseStyle(e.value):t[e.name]=e.value}),o.attributes=t}if(t.childNodes.length){let e=[];[].forEach.call(t.childNodes,t=\u003e{s(t,e)}),e.length\u0026\u0026(o.children=e)}e.push(o)};return[].forEach.call(e.body.childNodes,t=\u003es(t,i)),i};})(Highcharts);\n```\n[Live demo \u0026 testing](https://jsfiddle.net/BlackLabel/pb6jLf7g/)\n\n### Obtaining the patched version\nThe patched releases are available from all the usual distribution channels. With npm, upgrade the affected package to the patched version listed above, for example npm install highcharts@13.1.0. If you load Highcharts from the CDN, use the versioned URLs on code.highcharts.com, for example https://code.highcharts.com/13.1.0/highcharts.js. For more on each installation method, see the [installation guide](https://www.highcharts.com/docs/getting-started/installation).",
  "id": "GHSA-65hg-cf3f-5m39",
  "modified": "2026-10-28T19:55:23Z",
  "published": "2026-10-28T19:55:22Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/highcharts/highcharts/security/advisories/GHSA-65hg-cf3f-5m39"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-118244"
    },
    {
      "type": "WEB",
      "url": "https://github.com/highcharts/highcharts/commit/abde7c576793bf50b0e0636e59b49630de6dd0d5"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/highcharts/highcharts"
    },
    {
      "type": "WEB",
      "url": "https://github.com/highcharts/highcharts/releases/tag/v13.1.0"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "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",
      "type": "CVSS_V4"
    }
  ],
  "summary": "Highcharts Core: HTML text parsing falls back to unfiltered `innerHTML` during printing"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

Order JSON

Publication & reservation Sightings KEV catalogs Other timestamps

Loading timeline…

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted