CVE-2026-87502: Medium severity Google Chrome vulnerability
Chromium CVE-2026-87502: Confused deputy in Fullscreen
Other sources
Confused deputy in Fullscreen in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process and leveraged social engineering to spoof UI elements via a crafted HTML page. (Chromium security severity: Low)
— NVD
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-based Edgeto a version that resolves this vulnerability.Fixed in 153.0.8010.36
Event History
Frequently Asked Questions
What must an attacker have to exploit this issue?
The attacker must already have compromised the Chrome renderer process and must use social engineering. Exploitation also requires a crafted HTML page to spoof UI elements while in fullscreen mode.
Which Chrome versions are affected?
Google Chrome versions prior to 153.0.8010.36 are affected.
Who is realistically exposed?
Exposure is limited to users who can be induced to interact with attacker-controlled crafted HTML after the attacker has compromised Chrome's renderer process. The described impact is UI spoofing in fullscreen mode.