CVE-2026-87472: Input Validation
Chromium CVE-2026-87472: Improper input validation in FedCM
Other sources
Improper input validation in FedCM in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to spoof UI elements via a crafted HTML page. (Chromium security severity: Medium)
— MITRE
This CVE was assigned by Chrome. Microsoft Edge (Chromium-based) ingests Chromium, which addresses this vulnerability. Please see Google Chrome Releases for more information.
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 153.0.4234.32 - Upgrade
Upgrade
Chromium/FedCM (Google Chrome/Chromium-based browsers)to a version that resolves this vulnerability.Fixed in 153.0.8010.36
Event History
Frequently Asked Questions
What must an attacker achieve before this issue can be exploited?
The attacker must already have compromised the Chrome renderer process. They can then use a crafted HTML page to spoof UI elements.
Which Chrome versions need to be updated?
Google Chrome versions prior to 153.0.8010.36 are affected. Update Chrome to 153.0.8010.36 or a later version.
Is this exploitable by a remote attacker without any prior foothold?
The provided information describes remote exploitation only after the renderer process has been compromised. It does not state that this flaw alone provides initial renderer-process compromise.