EUVD-2026-74435
GHSA-3w9x-cxrm-cp8x
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
AC:H reflects mandatory prior renderer compromise; C:L only because origin-policy bypass enables limited cross-origin reads, not full data exfiltration.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
Lifecycle Timeline
5DescriptionCVE.org
Incorrect authorization in ServiceWorker in Google Chrome prior to 153.0.8010.36 allowed a remote attacker who had compromised the renderer process to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
Incorrect authorization in the ServiceWorker component of Google Chrome prior to 153.0.8010.36 enables a remote attacker who has already compromised the renderer process to bypass the browser's web origin policy via a crafted HTML page. Exploitation is constrained by two hard prerequisites: a prior renderer process compromise and user interaction, reflected accurately in the CVSS 3.1 Low score and Chromium's own 'Low' severity classification. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Two concrete prerequisites are required: (1) The attacker must have already achieved code execution within the Chrome renderer process via a separate, independent vulnerability - this is the primary limiting factor and represents a significant attacker capability threshold; (2) the victim user must visit or interact with a crafted HTML page (UI:R). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N yields a score of 3.1 Low, which is consistent with Chromium's internal 'Low' severity rating - both signal a vulnerability that is real but difficult to operationalize without a preceding, more serious 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-863 – Incorrect Authorization
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External POC / Exploit Code
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