EUVD-2026-74408
GHSA-x677-h9fx-wmjg
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Social engineering extension install requires UI:R; in-sandbox execution with no escape keeps S:U; C/I/A:H reflects full browser process compromise within sandbox.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
Lifecycle Timeline
4DescriptionCVE.org
Use after free in V8 in Google Chrome prior to 153.0.8010.36 allowed a remote attacker leveraging social engineering to execute arbitrary code inside the sandbox via a crafted Chrome extension. (Chromium security severity: Medium)
AnalysisAI
Use-after-free in Chrome's V8 JavaScript engine allows a remote attacker who can socially engineer a victim into installing a crafted Chrome extension to execute arbitrary code within the browser's renderer sandbox, affecting all Chrome versions prior to 153.0.8010.36. The vulnerability is constrained to in-sandbox execution - it does not constitute a standalone sandbox escape - which aligns with the S:U CVSS metric and Chromium's internal 'Medium' severity rating despite the 8.8 base score. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must be running Google Chrome prior to version 153.0.8010.36 on a desktop platform. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H) reflects high confidentiality, integrity, and availability impact within the browser process, but the S:U (scope unchanged) metric correctly encodes that execution is confined to the sandbox. … 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 via the browser's built-in update mechanism or by downloading directly from the vendor. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours, distribute security awareness messaging discouraging installation of untrusted extensions and alert IT to prioritize Chrome patching. …
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Same weakness CWE-416 – Use After Free
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External POC / Exploit Code
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