EUVD-2026-74440
GHSA-gchv-v2pc-wj2c
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
AC:H reflects mandatory renderer pre-compromise; S:C captures actual site isolation boundary crossing into other origins; C:L/I:L for cross-origin data read/write potential.
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
6DescriptionNVD
Missing authorization in Core in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
Site isolation bypass in Google Chrome Core prior to 153.0.8010.36 allows a remote attacker who has already compromised the renderer process to cross site isolation boundaries via a crafted HTML page. This is not a standalone exploit - it is a post-renderer-compromise escalation step that leverages a missing authorization check (CWE-862) in Chrome's Core component to violate the cross-origin process separation that site isolation guarantees. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two sequential conditions: (1) the victim must visit a crafted HTML page, providing the attacker initial access via the network (UI:R); and (2) a separate renderer process compromise must already be achieved - this CVE alone grants no code execution and is useless without a chained renderer exploit. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 score of 4.3 (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N) materially understates attack complexity: AC:L does not reflect the reality that a pre-existing renderer compromise is a mandatory prerequisite, which is itself a high-complexity condition requiring a separate, distinct exploit. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Vendor-released patch: Chrome 153.0.8010.36. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-862 – Missing Authorization
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External POC / Exploit Code
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