Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Primary rating from Vendor (google).
CVSS VectorVendor: google
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
Lifecycle Timeline
4DescriptionCVE.org
Insufficient policy enforcement in Passwords in Google Chrome prior to 149.0.7827.103 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: High)
AnalysisAI
Site isolation bypass in Google Chrome's Passwords component prior to version 149.0.7827.103 allows a remote attacker who has already compromised the renderer process to escape cross-origin boundaries via a crafted HTML page. The flaw is rated High severity by Chromium with a CVSS 8.1 score, but EPSS exploitation probability is very low (0.02%, 6th percentile) and no public exploit identified at time of analysis. The vendor has shipped a fix in the stable channel.
Technical ContextAI
The vulnerability sits in Chrome's Passwords subsystem and stems from insufficient policy enforcement (CWE-20, Improper Input Validation) around site isolation - the browser security boundary that ensures content from one origin cannot read or interact with another origin's process memory or stored credentials. Site isolation is implemented in Chromium by assigning each site to its own renderer process and validating cross-process IPC messages against the originating site's policy; weak validation of password-related IPC or policy checks lets a malicious renderer make requests it should not be authorized to make. The affected component is the Chromium browser engine itself (vendor:product cpe pattern google:chrome), and the issue was reported through the internal Chromium security process (chrome-cve-admin@google.com, tracker issue 517486004).
RemediationAI
Vendor-released patch: Google Chrome 149.0.7827.103 (stable desktop) - upgrade immediately via Chrome's built-in updater (chrome://settings/help) or enterprise deployment tooling, and restart the browser to apply the fix as documented in the Chrome Releases advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop_0153744567.html. For managed fleets, push the update through Group Policy, Jamf, Intune, or equivalent and verify the version on endpoints; Chromium-downstream browsers should be updated as soon as their respective vendors ship the corresponding rebase. As a compensating control until patching completes, restrict browsing of untrusted sites (URL allowlisting via enterprise policy), keep the Chrome sandbox enabled (do not launch with --no-sandbox), and consider disabling password autofill / sync via the PasswordManagerEnabled enterprise policy on high-value endpoints - the trade-off is loss of user convenience and reduced phishing resistance from autofill.
Same weakness CWE-20 – Improper Input Validation
View allSame technique Authentication Bypass
View allVendor StatusVendor
SUSE
Severity: Critical| Product | Status |
|---|---|
| openSUSE Leap 16.0 | Fixed |
| openSUSE Tumbleweed | Fixed |
Share
External POC / Exploit Code
Leaving vuln.today
EUVD-2026-35215
GHSA-wx4m-978h-jhx3