Home/CVE/Bentley Systems iTwin Platform exposed a Cesium ion access token in the source of some web pages. An unauthenticated att
CVE

CVE-2026-35383

Bentley Systems iTwin Platform exposed a Cesium ion access token in the source of some web pages. An unauthenticated att

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.

MEDIUM · CVSS 6.5 EPSS 0.0005
Schedule remediation
  • SSVC automatable: yes - attacks can be scripted at scale
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-540Inclusion of Sensitive Information in Source Code
▣

Scoring & Timeline

6.5
MEDIUM · CVSS v3.1 · 9119a7d8-5eab-497f-8521-727c672e3725
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD02 Apr 2026 · 08:16 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
SSVC triage · cisa-vulnrichment
Exploitation
poc
Automatable
yes
Technical impact
partial
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

1
cisa-csafcisa-csaf-csaf_files-IT-white-2026-va-26-092-01
🔗

References & Sources

3
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://cesium.com/learn/ion/cesium-ion-access-tokens/
https://raw.githubusercontent.com/cisagov/CSAF/develop/csaf_files/IT/white/2026/va-26-092-01.json
https://www.cve.org/CVERecord?id=CVE-2026-35383
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