Insufficient validation of untrusted input in COOP in Google Chrome prior to 148.0.7778.96 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
https://issues.chromium.org/issues/495802788
https://chromereleases.googleblog.com/2026/05/stable-channel-update-for-desktop.html