EUVD-2026-39036
GHSA-xrw9-98j7-cc8w
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Network-delivered via crafted HTML requiring active user visit (UI:R); SOP bypass yields only limited cross-origin data read with no integrity or availability impact.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Lifecycle Timeline
4DescriptionCVE.org
Inappropriate implementation in DeviceBoundSessionCredentials in Google Chrome prior to 149.0.7827.197 allowed a remote attacker to bypass same origin policy via a crafted HTML page. (Chromium security severity: High)
AnalysisAI
Same-origin policy bypass in Google Chrome's DeviceBoundSessionCredentials (DBSC) feature affects all Chrome versions prior to 149.0.7827.197, allowing a remote attacker to read limited cross-origin data via a crafted HTML page. The flaw stems from incorrect origin validation (CWE-346) in the DBSC implementation, a relatively new anti-session-hijacking subsystem. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires that the victim be using Google Chrome prior to version 149.0.7827.197 - Chrome is the only confirmed affected software. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 4.3 Medium (AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N) reflects a network-reachable, low-complexity attack requiring no privileges but requiring user interaction, with only partial confidentiality impact and no integrity or availability consequence. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker hosts a crafted HTML page that sends specially formed requests leveraging the flawed DeviceBoundSessionCredentials origin validation to access or influence session credential data bound to a different origin. A victim using an unpatched Chrome version visits the attacker-controlled page - through a phishing link, malicious ad, or compromised site - and the browser's incorrect origin check allows limited cross-origin data to be read by the attacker's page. … |
| Remediation | The primary fix is to update Google Chrome to version 149.0.7827.197 or later, which contains the corrected DeviceBoundSessionCredentials implementation. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-346 – Origin Validation Error
View allSame technique Authentication Bypass
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External POC / Exploit Code
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