EUVD-2026-74318
GHSA-r3wv-6v6h-96xg
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AC:H reflects required renderer pre-compromise; S:C reflects site isolation boundary crossing affecting other origins.
Primary rating from NVD.
CVSS VectorNVD
Lifecycle Timeline
6DescriptionNVD
Race condition in FileAPI 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: Medium)
AnalysisAI
Site isolation bypass in Google Chrome's FileAPI component allows a remote attacker who has already compromised the renderer process to escape Chrome's cross-origin isolation boundary via a crafted HTML page. Affected versions are all Chrome releases prior to 153.0.8010.36. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two preconditions: (1) the target user must visit a crafted HTML page controlled by the attacker, satisfying the UI:R user interaction requirement; and (2) the attacker must have already achieved code execution within Chrome's renderer process, typically via a separate memory-corruption or logic vulnerability in the renderer. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The provided CVSS 8.8 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) substantially overstates real-world risk by omitting the critical prerequisite: the attacker must already have compromised the renderer process via a separate, independent vulnerability. … 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, which is confirmed as the patched release per the Chrome Stable Channel advisory at https://chromereleases.googleblog.com/2026/09/stable-channel-update-for-desktop_0808145027.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: audit your organization's Chrome version distribution using your endpoint management platform and identify all instances running versions prior to 153.0.8010.36. …
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External POC / Exploit Code
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