EUVD-2026-65888
GHSA-rmfh-4236-c3gj
Severity by source
AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N
AC:H reflects mandatory renderer pre-compromise; C:L only as the bypass yields partial cross-origin read with no integrity or availability impact.
Primary rating from Vendor (Chrome).
CVSS VectorVendor: Chrome
Lifecycle Timeline
4DescriptionCVE.org
Improper input validation in Navigation in Google Chrome prior to 152.0.7977.65 allowed a remote attacker who had compromised the renderer process to bypass site isolation via a crafted HTML page. (Chromium security severity: Medium)
AnalysisAI
Site isolation bypass in Google Chrome prior to 152.0.7977.65 allows a remote attacker who has already compromised the renderer process to escape process-level sandboxing constraints via a crafted HTML page. The vulnerability stems from improper input validation in Chrome's Navigation subsystem (CWE-20), and exploitation requires both a prior renderer compromise and user interaction. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires two specific, sequential preconditions: the attacker must have already achieved code execution within the Chrome renderer process (via a separate renderer vulnerability), and the victim user must interact with a crafted HTML page (UI:R in the CVSS vector). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS vector AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N accurately captures the constrained risk profile: high attack complexity reflects the mandatory prerequisite of a pre-compromised renderer process, which is itself a non-trivial exploit chain step. … 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 | Update Google Chrome to version 152.0.7977.65 or later, which is the vendor-released patch as announced in the stable channel update advisory at chromereleases.googleblog.com. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-20 – Improper Input Validation
View allSame technique Authentication Bypass
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External POC / Exploit Code
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