EUVD-2026-34481
GHSA-hp2f-g6xr-cfwv
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Primary rating from Vendor (google).
CVSS VectorVendor: google
Lifecycle Timeline
4DescriptionCVE.org
Inappropriate implementation in Password Manager in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to leak cross-origin data via a crafted HTML page. (Chromium security severity: Medium)
AnalysisAI
Cross-origin data leakage in Google Chrome's Password Manager component (versions prior to 149.0.7827.53) enables unauthenticated remote attackers to access sensitive data across security origin boundaries when a victim visits a specially crafted HTML page. The flaw involves an inappropriate implementation of origin validation (CWE-346) within the Password Manager subsystem, potentially exposing saved credentials or autofill data to a malicious origin. No active exploitation has been confirmed - SSVC classifies exploitation as none and EPSS places this in the 11th percentile - though the High confidentiality impact in the CVSS vector reflects meaningful data exposure if triggered.
Technical ContextAI
The vulnerability resides in Chrome's integrated Password Manager, which handles credential autofill and storage across websites. CWE-346 (Origin Validation Error) identifies the root cause class: a failure to properly enforce or validate same-origin boundaries when the Password Manager processes or responds to page-level interactions. The same-origin policy (SOP) is a foundational browser security primitive preventing scripts on one origin from reading data belonging to another; when a browser subsystem like Password Manager incorrectly implements this boundary - for example by allowing cross-origin pages to trigger or observe autofill state - an attacker-controlled page can harvest credential or form data from other origins the victim has stored. No CPE strings were provided in the input data, but the EUVD affected version string confirms all Chrome desktop releases prior to 149.0.7827.53 as vulnerable. The Chromium issue tracker reference (https://issues.chromium.org/issues/497831111) may contain additional technical detail but may be access-restricted.
RemediationAI
The primary fix is upgrading Google Chrome to version 149.0.7827.53 or later, documented in the official stable channel update advisory at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html. Chrome typically auto-updates on desktop, but enterprise deployments managed via Group Policy or mobile device management should verify the update has been applied. As a compensating control prior to patching, administrators or users can disable the Chrome Password Manager entirely under Settings > Autofill and passwords > Google Password Manager, which removes the vulnerable component from the attack surface at the cost of losing credential autofill functionality - users would need to rely on an external password manager. Blocking access to untrusted or unknown web pages via enterprise web filtering also reduces exposure, since exploitation requires the victim to visit an attacker-controlled HTML page.
Same weakness CWE-346 – Origin Validation Error
View allSame technique Information Disclosure
View allVendor StatusVendor
SUSE
Severity: Medium| Product | Status |
|---|---|
| openSUSE Tumbleweed | Fixed |
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