VulnerabilityAwaiting Analysis

CVE-2026-35383

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

MEDIUM 6.9EPSS 0.28%

Does this matter?

Lower severity and a low EPSS score (0.28%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 4.0: 6.9 MEDIUMCVSS: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/M
EPSS: 0.28% probability · 21th percentile
CISA KEV: Not listed
Weakness: CWE-540
Source: 9119a7d8-5eab-497f-8521-727c672e3725

References

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

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.