Vulnerability-Lookup

CVE-2026-35383 (GCVE-0-2026-35383)

Vulnerability from cvelistv5 – Published: 2026-04-02 19:04 – Updated: 2026-04-14 14:04

Title

Bentley Systems iTwin Platform exposed access token

Summary

Bentley Systems iTwin Platform exposed a Cesium ion access token in the source of some web pages. An unauthenticated attacker could use this token to enumerate or delete certain assets. As of 2026-03-27, the token is no longer present in the web pages and cannot be used to enumerate or delete assets.

Severity

6.5 (Medium)


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

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

SSVC

Exploitation: poc Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-540 - Inclusion of Sensitive Information in Source Code

Assigner

cisa-cg

References

3 references

URL	Tags
https://raw.githubusercontent.com/cisagov/CSAF/de…
https://www.cve.org/CVERecord?id=CVE-2026-35383
https://cesium.com/learn/ion/cesium-ion-access-tokens/

Impacted products

1 product

Vendor	Product	Version
Bentley Systems	iTwin Platform	Affected: 0 , < 2026-03-27 (custom) Unaffected: 2026-03-27

Date Public

2026-04-02 00:00

Credits

Mohamed Samy Dawood (Specter), Independent Security Researcher

Show details on NVD website

JSON

To clipboard

{
  "containers": {
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                "id": "CVE-2026-35383",
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                "timestamp": "2026-04-14T14:04:23.166787Z",
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        }
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            "vulnIntegrityImpact": "NONE"
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        },
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        {
          "name": "url",
          "url": "https://cesium.com/learn/ion/cesium-ion-access-tokens/"
        }
      ],
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    "redhat_vex": {
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}

FKIE_CVE-2026-35383

Vulnerability from fkie_nvd - Published: 2026-04-02 20:16 - Updated: 2026-06-17 10:40

Severity

6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Summary

References

	URL	Tags
	9119a7d8-5eab-497f-8521-727c672e3725	https://cesium.com/learn/ion/cesium-ion-access-tokens/
	9119a7d8-5eab-497f-8521-727c672e3725	https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-092-01.json
	9119a7d8-5eab-497f-8521-727c672e3725	https://www.cve.org/CVERecord?id=CVE-2026-35383

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unknown",
          "product": "iTwin Platform",
          "vendor": "Bentley Systems",
          "versions": [
            {
              "lessThan": "2026-03-27",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
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              "version": "2026-03-27"
            }
          ]
        }
      ],
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    }
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    }
  ],
  "id": "CVE-2026-35383",
  "lastModified": "2026-06-17T10:40:29.900",
  "metrics": {
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          "confidentialityImpact": "LOW",
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          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
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        "source": "9119a7d8-5eab-497f-8521-727c672e3725",
        "type": "Secondary"
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    ],
    "cvssMetricV40": [
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
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          "subConfidentialityImpact": "NONE",
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          "valueDensity": "NOT_DEFINED",
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        },
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      }
    ],
    "ssvcV203": [
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    {
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    }
  ],
  "sourceIdentifier": "9119a7d8-5eab-497f-8521-727c672e3725",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-540"
        }
      ],
      "source": "9119a7d8-5eab-497f-8521-727c672e3725",
      "type": "Secondary"
    }
  ]
}

GHSA-3467-W26X-74WV

Vulnerability from github – Published: 2026-04-02 21:32 – Updated: 2026-04-02 21:32

Details

Severity

6.5 (Medium)


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

6.9 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-35383"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-540"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-02T20:16:29Z",
    "severity": "MODERATE"
  },
  "details": "Bentley Systems iTwin Platform exposed a Cesium ion access token in the source of some web pages. An unauthenticated attacker could use this token to enumerate or delete certain assets. As of 2026-03-27, the token is no longer present in the web pages and cannot be used to enumerate or delete assets.",
  "id": "GHSA-3467-w26x-74wv",
  "modified": "2026-04-02T21:32:54Z",
  "published": "2026-04-02T21:32:53Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-35383"
    },
    {
      "type": "WEB",
      "url": "https://cesium.com/learn/ion/cesium-ion-access-tokens"
    },
    {
      "type": "WEB",
      "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-092-01.json"
    },
    {
      "type": "WEB",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-35383"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/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",
      "type": "CVSS_V4"
    }
  ]
}

VA-26-092-01

Vulnerability from csaf_cisa - Published: 2026-04-02 17:11 - Updated: 2026-04-02 17:11

Summary

Bentley Systems iTwin Platform exposed access token

Notes

Legal Notice: All information products included in [https://github.com/cisagov/CSAF/tree/develop/csaf_files/IT/white](https://github.com/cisagov/CSAF/tree/develop/csaf_files/IT/white) are provided \"as is\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see [https://us-cert.cisa.gov/tlp/](https://us-cert.cisa.gov/tlp/).

Countries and Areas Deployed: Worldwide

Critical Infrastructure Sectors: Information Technology

Risk Evaluation: Bentley Systems iTwin Platform exposed a Cesium ion access token in the source of some web pages. An unauthenticated attacker could use this token to enumerate or delete certain assets.

Recommended Practices: As of 2026-03-27, the token is no longer present in the web pages and cannot be used to enumerate or delete assets.

Company Headquarters Location: United States

CVE-2026-35383

6.5 (Medium)


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

CWE-540 - Inclusion of Sensitive Information in Source Code

Affected products

Known affected 1 product

Product	Identifier	Version	Remediation
Bentley Systems iTwin Platform <2026-03-27 Bentley Systems / iTwin Platform		<2026-03-27	Mitigation

Fixed 1 product

Product	Identifier	Version	Remediation
Bentley Systems iTwin Platform 2026-03-27 Bentley Systems / iTwin Platform		2026-03-27	Mitigation

References

4 references

URL	Category
https://raw.githubusercontent.com/cisagov/CSAF/de…	self
https://raw.githubusercontent.com/cisagov/CSAF/de…	external
https://www.cve.org/CVERecord?id=CVE-2026-35383	external
https://cesium.com/learn/ion/cesium-ion-access-tokens/	external

Acknowledgments

Mohamed Samy Dawood

JSON

To clipboard

{
  "document": {
    "category": "csaf_vex",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "All information products included in [https://github.com/cisagov/CSAF/tree/develop/csaf_files/IT/white](https://github.com/cisagov/CSAF/tree/develop/csaf_files/IT/white) are provided \\\"as is\\\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see [https://us-cert.cisa.gov/tlp/](https://us-cert.cisa.gov/tlp/).",
        "title": "Legal Notice"
      },
      {
        "category": "other",
        "text": "Worldwide",
        "title": "Countries and Areas Deployed"
      },
      {
        "category": "other",
        "text": "Information Technology",
        "title": "Critical Infrastructure Sectors"
      },
      {
        "category": "summary",
        "text": "Bentley Systems iTwin Platform exposed a Cesium ion access token in the source of some web pages. An unauthenticated attacker could use this token to enumerate or delete certain assets.",
        "title": "Risk Evaluation"
      },
      {
        "category": "general",
        "text": "As of 2026-03-27, the token is no longer present in the web pages and cannot be used to enumerate or delete assets.",
        "title": "Recommended Practices"
      },
      {
        "category": "other",
        "text": "United States",
        "title": "Company Headquarters Location"
      }
    ],
    "publisher": {
      "category": "coordinator",
      "contact_details": "https://www.cisa.gov/report",
      "issuing_authority": "CISA",
      "name": "CISA",
      "namespace": "https://www.cisa.gov/"
    },
    "references": [
      {
        "category": "self",
        "summary": "Vulnerability Advisory VA-26-092-01 CSAF",
        "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-092-01.json"
      }
    ],
    "title": "Bentley Systems iTwin Platform exposed access token",
    "tracking": {
      "current_release_date": "2026-04-02T17:11:43Z",
      "generator": {
        "engine": {
          "name": "VINCE-NT",
          "version": "1.13.0+build.51"
        }
      },
      "id": "VA-26-092-01",
      "initial_release_date": "2026-04-02T17:11:43Z",
      "revision_history": [
        {
          "date": "2026-04-02T17:11:43Z",
          "number": "1.0.0",
          "summary": "Initial publication"
        }
      ],
      "status": "final",
      "version": "1.0.0"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c2026-03-27",
                "product": {
                  "name": "Bentley Systems iTwin Platform \u003c2026-03-27",
                  "product_id": "CSAFPID-0001"
                }
              },
              {
                "category": "product_version",
                "name": "2026-03-27",
                "product": {
                  "name": "Bentley Systems iTwin Platform 2026-03-27",
                  "product_id": "CSAFPID-0002"
                }
              }
            ],
            "category": "product_name",
            "name": "iTwin Platform"
          }
        ],
        "category": "vendor",
        "name": "Bentley Systems"
      }
    ]
  },
  "vulnerabilities": [
    {
      "acknowledgments": [
        {
          "names": [
            "Mohamed Samy Dawood"
          ]
        }
      ],
      "cve": "CVE-2026-35383",
      "cwe": {
        "id": "CWE-540",
        "name": "Inclusion of Sensitive Information in Source Code"
      },
      "notes": [
        {
          "category": "summary",
          "text": "Bentley Systems iTwin Platform exposed a Cesium ion access token in the source of some web pages. An unauthenticated attacker could use this token to enumerate or delete certain assets. As of 2026-03-27, the token is no longer present in the web pages and cannot be used to enumerate or delete assets.",
          "title": "Description"
        },
        {
          "category": "details",
          "text": "SSVCv2/E:P/A:Y/T:P/2026-03-25T14:39:05Z/",
          "title": "SSVC"
        }
      ],
      "product_status": {
        "fixed": [
          "CSAFPID-0002"
        ],
        "known_affected": [
          "CSAFPID-0001"
        ]
      },
      "references": [
        {
          "category": "external",
          "summary": "CSAF",
          "url": "https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-092-01.json"
        },
        {
          "category": "external",
          "summary": "CVE",
          "url": "https://www.cve.org/CVERecord?id=CVE-2026-35383"
        },
        {
          "category": "external",
          "summary": "cesium.com",
          "url": "https://cesium.com/learn/ion/cesium-ion-access-tokens/"
        }
      ],
      "release_date": "2026-04-02T00:00:00Z",
      "remediations": [
        {
          "category": "mitigation",
          "date": "2026-03-27T00:00:00Z",
          "details": "The exposed token has been removed and no longer enables access as of 2026-03-27.",
          "product_ids": [
            "CSAFPID-0001"
          ]
        },
        {
          "category": "mitigation",
          "date": "2026-03-27T00:00:00Z",
          "details": "The exposed token has been removed and no longer enables access as of 2026-03-27.",
          "product_ids": [
            "CSAFPID-0002"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
            "version": "3.1"
          },
          "products": [
            "CSAFPID-0001"
          ]
        }
      ],
      "title": "Bentley Systems iTwin Platform exposed access token"
    }
  ]
}

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.

Detection rules are retrieved from Rulezet.

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.

Action not permitted

CVE-2026-35383 (GCVE-0-2026-35383)

FKIE_CVE-2026-35383

GHSA-3467-W26X-74WV

VA-26-092-01

Tags

Sightings

Nomenclature