Bentley Systems iTwin Platform exposed access token
Priority HIGH 70CWE-540Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- Low · None · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
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.
Why it matters now
Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00286 21st percentileScored 2026-11-07
Fix Fixed iTwin Platform (Bentley Systems): 2026-03-27
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Bentley Systems | iTwin Platform | before 2026-03-27 | 2026-03-27 | Patch available | CNA |
- iTwin Platform VendorBentley Systems Affected before 2026-03-27 Fixed in 2026-03-27 Patch available CNA
Remediation
- Fix · CNA iTwin Platform (Bentley Systems) Fixed in 2026-03-27
Timeline
- 2026-10-02 Threatist record created from CVE-2026-35383
- 2026-10-03 Alias added: GHSA-3467-w26x-74wv
Sources
- CVE-2026-35383 · CVE Program
- CVE-2026-35383 · NVD
- FIRST EPSS
- GHSA-3467-w26x-74wv · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences