EUVD-2026-65947
GHSA-wwph-5m73-pp48
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), requires victim interaction (UI:R) and precise timing conditions (AC:H); impact is confidentiality-only with no integrity or availability effect.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N
Lifecycle Timeline
4DescriptionCVE.org
Observable discrepancy in HTML in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to obtain sensitive information via a crafted HTML page. (Chromium security severity: Medium)
AnalysisAI
Observable discrepancy in HTML rendering in Google Chrome prior to 152.0.7977.65 enables a remote attacker to extract sensitive information when a victim visits a crafted HTML page. The root cause is CWE-203 (Observable Discrepancy), where Chrome's handling of specific HTML constructs produces measurable behavioral differences - such as timing variations or rendering side-channels - that leak protected state. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | The victim must actively visit or be redirected to an attacker-controlled HTML page in an unpatched Chrome browser (prior to 152.0.7977.65), satisfying the UI:R requirement. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 base score of 5.3 (Medium) is calibrated by AC:H and UI:R, which significantly constrain exploitability in practice: an attacker must craft a page that a victim actively visits, and the side-channel technique must be reliably triggered under real-world browser scheduling and network conditions - both non-trivial requirements. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker hosts a crafted HTML page designed to probe Chrome's rendering or caching behavior across origins - for example, using timing measurements on resource loads or pixel-level rendering differences - to infer whether the visiting user is authenticated to a target site. The victim is lured to the attacker's page via phishing, malvertising, or an embedded iframe, and the page silently leaks cross-origin state back to the attacker. … |
| Remediation | Update Google Chrome to version 152.0.7977.65 or later, which is confirmed as the patched release per the vendor advisory at https://chromereleases.googleblog.com/2026/08/stable-channel-update-for-desktop_0256176589.html. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-203 – Observable Discrepancy
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External POC / Exploit Code
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