Vulnerability-Lookup

GHSA-JRC7-96C5-Q579

Vulnerability from github – Published: 2026-09-08 20:50 – Updated: 2026-09-08 20:50

Summary

MapLibre GL JS: XSS Sanitizer Bypass in DOM.sanitize() via Live NamedNodeMap Removal Skip

Details

Impact

DOM.sanitize() in src/util/dom.ts iterated elem.attributes (a live NamedNodeMap) while calling elem.removeAttribute() in the same loop. Removing an attribute shifts subsequent attributes down by one index, causing the iterator to skip the adjacent attribute.

An attacker can provide an HTML payload with consecutive dangerous attributes (such as <details open onload="1" ontoggle="...">). The first attribute is stripped while the second survives and executes upon insertion into innerHTML via the attribution control without requiring user interaction (zero-click XSS).

Applications rendering untrusted/third-party style attribution strings or user-supplied custom attributions are impacted.

Patches

The issue has been resolved by creating a static snapshot of attributes using Array.from(elem.attributes) before iteration. Please upgrade to maplibre-gl version 6.4.1 (or latest).

Workarounds

Sanitizing the attribute field of a source before passing it down to maplibre

Severity

10.0 (Critical)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Show details on source website

JSON

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{
  "affected": [
    {
      "database_specific": {
        "last_known_affected_version_range": "\u003c= 6.4.0"
      },
      "package": {
        "ecosystem": "npm",
        "name": "maplibre-gl"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.4.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-85061"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-09-08T20:50:47Z",
    "nvd_published_at": "2026-09-03T21:17:23Z",
    "severity": "CRITICAL"
  },
  "details": "### Impact\n`DOM.sanitize()` in `src/util/dom.ts` iterated `elem.attributes` (a live `NamedNodeMap`) while calling `elem.removeAttribute()` in the same loop. Removing an attribute shifts subsequent attributes down by one index, causing the iterator to skip the adjacent attribute.\n\nAn attacker can provide an HTML payload with consecutive dangerous attributes (such as `\u003cdetails open onload=\"1\" ontoggle=\"...\"\u003e`). The first attribute is stripped while the second survives and executes upon insertion into `innerHTML` via the attribution control without requiring user interaction (zero-click XSS).\n\nApplications rendering untrusted/third-party style attribution strings or user-supplied custom attributions are impacted.\n\n### Patches\nThe issue has been resolved by creating a static snapshot of attributes using `Array.from(elem.attributes)` before iteration. Please upgrade to `maplibre-gl` version **6.4.1** (or latest).\n\n### Workarounds\nSanitizing the attribute field of a source before passing it down to maplibre",
  "id": "GHSA-jrc7-96c5-q579",
  "modified": "2026-09-08T20:50:47Z",
  "published": "2026-09-08T20:50:47Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/maplibre/maplibre-gl-js/security/advisories/GHSA-jrc7-96c5-q579"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-85061"
    },
    {
      "type": "WEB",
      "url": "https://github.com/maplibre/maplibre-gl-js/pull/8189"
    },
    {
      "type": "WEB",
      "url": "https://github.com/maplibre/maplibre-gl-js/commit/1da69f3cd913a39fa948708e01478663bf48bc27"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/maplibre/maplibre-gl-js"
    },
    {
      "type": "WEB",
      "url": "https://github.com/maplibre/maplibre-gl-js/releases/tag/v6.4.1"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "MapLibre GL JS: XSS Sanitizer Bypass in DOM.sanitize() via Live NamedNodeMap Removal Skip"
}

CVE-2026-85061 (GCVE-0-2026-85061)

Vulnerability from cvelistv5 – Published: 2026-09-03 20:18 – Updated: 2026-09-04 18:37

Title

MapLibre GL JS: XSS Sanitizer Bypass in DOM.sanitize() via Live NamedNodeMap Removal Skip

Summary

MapLibre GL JS is an interactive vector tile map library for web browsers. Prior to 6.4.1, DOM.sanitize() in src/util/dom.ts iterates elem.attributes as a live NamedNodeMap while removeAttributes() removes attributes from the same collection, shifting indexes and skipping an adjacent dangerous attribute. An attacker who controls untrusted third-party style attribution strings or user-supplied custom attributions can supply consecutive dangerous attributes, causing an attribute such as onload or ontoggle to survive sanitization and execute when the attribution control inserts the content into innerHTML. A victim must render the affected map content for the script to execute. This issue is fixed in version 6.4.1.

Severity

10 (Critical)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-04 18:36 UTC

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 7846 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/maplibre/maplibre-gl-js/securi…	x_refsource_CONFIRM
https://github.com/maplibre/maplibre-gl-js/pull/8189	x_refsource_MISC
https://github.com/maplibre/maplibre-gl-js/commit…	x_refsource_MISC
https://github.com/maplibre/maplibre-gl-js/releas…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
maplibre	maplibre-gl-js	Affected: < 6.4.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-85061",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-04T18:36:59.472100Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-04T18:37:12.250Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "maplibre-gl-js",
          "vendor": "maplibre",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 6.4.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "MapLibre GL JS is an interactive vector tile map library for web browsers. Prior to 6.4.1, DOM.sanitize() in src/util/dom.ts iterates elem.attributes as a live NamedNodeMap while removeAttributes() removes attributes from the same collection, shifting indexes and skipping an adjacent dangerous attribute. An attacker who controls untrusted third-party style attribution strings or user-supplied custom attributions can supply consecutive dangerous attributes, causing an attribute such as onload or ontoggle to survive sanitization and execute when the attribution control inserts the content into innerHTML. A victim must render the affected map content for the script to execute. This issue is fixed in version 6.4.1."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 10,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "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": "2026-09-03T20:18:50.854Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/maplibre/maplibre-gl-js/security/advisories/GHSA-jrc7-96c5-q579",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/maplibre/maplibre-gl-js/security/advisories/GHSA-jrc7-96c5-q579"
        },
        {
          "name": "https://github.com/maplibre/maplibre-gl-js/pull/8189",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/maplibre/maplibre-gl-js/pull/8189"
        },
        {
          "name": "https://github.com/maplibre/maplibre-gl-js/commit/1da69f3cd913a39fa948708e01478663bf48bc27",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/maplibre/maplibre-gl-js/commit/1da69f3cd913a39fa948708e01478663bf48bc27"
        },
        {
          "name": "https://github.com/maplibre/maplibre-gl-js/releases/tag/v6.4.1",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/maplibre/maplibre-gl-js/releases/tag/v6.4.1"
        }
      ],
      "source": {
        "advisory": "GHSA-jrc7-96c5-q579",
        "discovery": "UNKNOWN"
      },
      "title": "MapLibre GL JS: XSS Sanitizer Bypass in DOM.sanitize() via Live NamedNodeMap Removal Skip"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-85061",
    "datePublished": "2026-09-03T20:18:50.854Z",
    "dateReserved": "2026-09-02T21:21:01.774Z",
    "dateUpdated": "2026-09-04T18:37:12.250Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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.

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