EUVD-2026-66087
GHSA-m4j7-jjw9-h9jm
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Network-delivered via crafted HTML page (AV:N), user must open the link (UI:R), no privileges required on attacker side, integrity-only impact limited to access restriction bypass within Chrome's boundary (I:L, S:U, C:N, A:N).
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
3DescriptionCVE.org
Incorrect reference resolution in CustomTabs in Google Chrome on on Android prior to 152.0.7977.65 allowed a remote attacker to bypass system access restrictions via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
Incorrect reference resolution in the CustomTabs component of Google Chrome for Android (all versions prior to 152.0.7977.65) allows a remote, unauthenticated attacker to bypass Android system access restrictions by delivering a crafted HTML page. The integrity impact is limited (I:L, S:U) with no confidentiality or availability consequence. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires the victim to be running Google Chrome on Android (not desktop) at a version prior to 152.0.7977.65, and the attack surface is specifically the CustomTabs component - meaning the crafted page must be opened through a CustomTab context (common in third-party apps that embed web views via Chrome CustomTabs) or directly in Chrome. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 3.1 vector (AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N) scores 4.3 (Medium), reflecting network delivery, low attack complexity, no required privileges, but mandatory user interaction and only limited integrity impact with no confidentiality or availability consequence. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | An attacker crafts a malicious HTML page and delivers its URL through a third-party Android application that uses Chrome CustomTabs to render web content - such as a social, shopping, or news app. When the victim taps the link, Chrome opens the page in a CustomTab; the page triggers the incorrect reference resolution flaw to bypass Android system access restrictions and gain limited unauthorized access to resources beyond normal web content boundaries. … |
| Remediation | Update Google Chrome for Android to version 152.0.7977.65 or later via the Google Play Store; this is the vendor-confirmed fix per the 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 technique Authentication Bypass
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External POC / Exploit Code
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