EUVD-2026-74422
GHSA-4hcf-rvj5-9wv6
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Network-delivered via crafted page (AV:N); side-channel measurement demands high attacker precision (AC:H); no privilege required (PR:N); victim must browse to page (UI:R); confidentiality-only impact with no integrity or availability effect.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
Lifecycle Timeline
4DescriptionCVE.org
Observable discrepancy in Layout in Google Chrome prior to 153.0.8010.36 allowed a remote attacker to leak sensitive information via a crafted HTML page. (Chromium security severity: Medium)
AnalysisAI
Observable discrepancy in Chrome's Layout engine prior to version 153.0.8010.36 allows a remote attacker to infer sensitive cross-origin information by measuring rendering differences triggered by a crafted HTML page. The CWE-203 root cause - an attacker-observable behavioral difference that correlates with secret state - places this in the browser side-channel (XSLeak) family, where layout timing or geometry variations can reveal whether a user is authenticated to a third-party origin or whether specific cross-origin resources exist. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must navigate to an attacker-controlled HTML page using a vulnerable version of Chrome (prior to 153.0.8010.36), satisfying the UI:R requirement. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 5.3 (Medium) score accurately reflects the constrained exploitation path: AC:H acknowledges that reliable side-channel measurement of layout discrepancies is technically demanding, requiring attacker-controlled timing and environmental consistency, while UI:R means the victim must navigate to the malicious page. … 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-203 – Observable Discrepancy
View allSame technique Information Disclosure
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External POC / Exploit Code
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