CVE-2026-87469: Input Validation
Chromium CVE-2026-87469: Improper input validation in Extensions
Other sources
Improper input validation in Extensions in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to bypass web origin policy into a privileged page via crafted network traffic. (Chromium security severity: Low)
— 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
Google Chrome/Chromium Extensionsto a version that resolves this vulnerability.Fixed in 153.0.8010.36
Event History
Frequently Asked Questions
Which Chrome versions need to be updated?
Google Chrome versions prior to 153.0.8010.36 are affected. Update to 153.0.8010.36 or a later version.
What does an attacker need to exploit this issue?
The issue can be exploited remotely using crafted network traffic. The available information does not state that local access, user authentication, or installation of a malicious extension is required.
What is the potential impact of successful exploitation?
A successful attacker could bypass the web origin policy and reach a privileged page. The issue is in Chrome Extensions and is rated Low severity by Chromium.