CVE-2026-35383Network attack vector

Asset enumeration and deletion via exposed token

Published Apr 2, 2026 · Updated Apr 2, 2026

Sensitive information exposure in Bentley Systems iTwin Platform before 2026-03-27 allows remote attackers to enumerate or delete assets. The affected web pages embedded a Cesium ion token in rendered source, and its permissions enabled asset enumeration and deletion through Cesium ion APIs. Network access alone exposed the reusable token without authentication or user interaction, enabling disclosure or deletion of certain assets.

CVSS severity6.9
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Sensitive information exposure in Bentley Systems iTwin Platform before 2026-03-27 allows remote attackers to enumerate or delete assets. The affected web pages embedded a Cesium ion token in rendered source, and its permissions enabled asset enumeration and deletion through Cesium ion APIs. Network access alone exposed the reusable token without authentication or user interaction, enabling disclosure or deletion of certain assets.

The record

CVE
CVE-2026-35383
Published
Apr 2, 2026
Updated
Apr 2, 2026
Vendor
Bentley Systems
Product
iTwin Platform
Classifications
CWE-540, T1552
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 2, 2026CVE publishedPublication date reported by the CVE source.
  2. Apr 2, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <2026-03-27

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Bentley Systems · iTwin Platformversion=0 <2026-03-27

Published CVSS scores

6.5CISACVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
6.9CISA CNACVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-540Inclusion of Sensitive Information in Source Code
T1552Unsecured Credentials

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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