CVE-2026-35383 Bentley Systems iTwin Platform exposed access token
An exposed Cesium ion access token allowed unauthenticated attackers to enumerate or delete assets in the iTwin Platform.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-35383?
CVE-2026-35383 is a medium-severity vulnerability in Bentley Systems iTwin Platform, published on 2 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
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.
Weakness: CWE-540
Which versions are affected by CVE-2026-35383?
How do I fix CVE-2026-35383?
No fix has been published for CVE-2026-35383 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-35383 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-35383 exists.
Sources
Also known as GHSA-3467-w26x-74wv.