EUVD-2026-34718
GHSA-6ghh-h4xg-rhf2
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Primary rating from NVD.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Lifecycle Timeline
4DescriptionCVE.org
Inappropriate implementation in Browser in Google Chrome prior to 149.0.7827.53 allowed a remote attacker to bypass navigation restrictions via a crafted HTML page. (Chromium security severity: Low)
AnalysisAI
Navigation restriction bypass in Google Chrome prior to 149.0.7827.53 allows a remote unauthenticated attacker to circumvent browser-enforced navigation controls by delivering a crafted HTML page to a victim. The flaw is classified by Google as an inappropriate implementation in the browser component, carrying a CVSS 4.3 (Medium) with limited integrity impact and no confidentiality or availability consequence. No public exploit has been identified at time of analysis, EPSS exploitation probability stands at 0.02% (4th percentile), and Google's internal Chromium severity rating is Low - consistent signals pointing to a low-urgency, routine-patch item outside of specialized deployment contexts.
Technical ContextAI
The root cause is CWE-284 (Improper Access Control), specifically an 'inappropriate implementation' in Chrome's browser navigation subsystem - Google's taxonomy for logic-level flaws where browser-enforced policies are not correctly applied rather than memory-safety failures. Navigation restrictions in Chrome encompass cross-origin navigation guards, frame navigation policies (e.g., Content Security Policy frame-ancestors, sandbox attributes), and same-origin policy enforcement over APIs such as window.location, the History API, and iframe navigation. The crafted HTML page trigger indicates the attack surface lies in HTML/JavaScript-driven navigation parsing or policy evaluation logic. The affected product per ENISA EUVD-2026-34718 is Google Chrome across all desktop platforms (Windows, macOS, Linux) for versions below 149.0.7827.53, with no CPE string explicitly provided in the source data but implicitly cpe:2.3:a:google:chrome:*:*:*:*:*:*:*:* up to the fixed version.
RemediationAI
The primary remediation is upgrading Google Chrome to version 149.0.7827.53 or later via the stable channel, which contains the vendor-released patch for this issue. End users can update through Chrome's built-in mechanism (Menu → Help → About Google Chrome → update prompt), while enterprise administrators should deploy the update via Google Admin Console, Microsoft Intune, or equivalent MDM tooling. The authoritative advisory and release notes are at https://chromereleases.googleblog.com/2026/06/stable-channel-update-for-desktop.html. Given the low CVSS score, Chromium Low severity rating, and 0.02% EPSS, this update can be applied within standard monthly patching cycles for most organizations. Exception: kiosk or locked-down deployments where browser navigation policy is a deliberate security boundary should treat this with higher urgency. No documented workarounds are available; patching is the only confirmed remediation.
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Same weakness CWE-284 – Improper Access Control
View allSame technique Authentication Bypass
View allVendor StatusVendor
SUSE
Severity: Medium| Product | Status |
|---|---|
| openSUSE Tumbleweed | Fixed |
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External POC / Exploit Code
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