EUVD-2026-66040
GHSA-x9x7-mwvx-fq55
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Network delivery via crafted page requires active user visit (UI:R, AV:N); no privileges needed; origin bypass yields integrity-only impact with no confidentiality or availability effect.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Lifecycle Timeline
4DescriptionCVE.org
Incorrect authorization in Controls in Google Chrome prior to 152.0.7977.65 allowed a remote attacker to bypass web origin policy via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
Incorrect authorization in the Controls component of Google Chrome prior to version 152.0.7977.65 enables web origin policy bypass via a crafted HTML page, requiring only that a user visit the attacker-controlled page. The flaw (CWE-863) allows limited cross-origin integrity manipulation with no confidentiality or availability impact, as reflected in the CVSS integrity-only impact score. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a user running an unpatched version of Google Chrome (any version prior to 152.0.7977.65) to visit a crafted HTML page under attacker control, as confirmed by the UI:R metric in the CVSS vector. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 score of 4.3 (Medium) is driven by network accessibility (AV:N) and no required privileges (PR:N), but is substantially tempered by required user interaction (UI:R) and impact confined to limited integrity (I:L) with no confidentiality or availability breach (C:N/A:N). … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker registers a malicious domain and serves a crafted HTML page that exploits the incorrect authorization logic in Chrome's Controls component. A target user is lured to visit this page - via phishing email link or malicious advertisement - and upon interacting with the page, the origin policy check is bypassed, allowing the page to perform limited cross-origin write operations against content from a different origin that would otherwise be protected. … |
| Remediation | Upgrade Google Chrome to version 152.0.7977.65 or later, as detailed in the vendor stable channel update 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-863 – Incorrect Authorization
View allSame technique Authentication Bypass
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External POC / Exploit Code
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