EUVD-2026-74519
GHSA-rxg8-8wfh-hr43
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:N
AC:H reflects mandatory renderer-compromise prerequisite; S:C reflects site isolation bypass enabling cross-origin data access.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
Lifecycle Timeline
6DescriptionCVE.org
Incorrect authorization in Network 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: High)
AnalysisAI
Site isolation bypass in Google Chrome's Network component prior to 153.0.8010.36 enables an attacker who has already compromised the renderer process to read and modify cross-origin data by exploiting incorrect authorization checks. The vulnerability requires a user to visit a crafted HTML page, making it a second-stage component in a renderer-compromise exploit chain. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two chained prerequisites: (1) the victim must visit a crafted HTML page, providing the initial renderer exploit delivery (UI:R), and (2) the attacker must have a working renderer-process compromise - meaning a separate, additional vulnerability capable of breaking out of the renderer's normal execution context. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U) scores 8.1 but contains two metric choices that merit scrutiny. … 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 | Update Google Chrome to version 153.0.8010.36 or later; this is the vendor-confirmed patched release per the stable channel advisory. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, assess the organization's Chrome deployment footprint and identify systems used to access sensitive business applications. …
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Same weakness CWE-863 – Incorrect Authorization
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External POC / Exploit Code
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