Missing authorization in Storage in Google Chrome prior to 153.0.8010.52 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted PDF file. (Chromium security severity: Medium)
https://issues.chromium.org/issues/540051167
https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0194356994.html