CVE-2026-14007: Chrome Permissions Policy Bypass – Patch v150.0.7871.47

Technical summary

CVE-2026-14007 is a policy enforcement bypass in Chrome's PermissionsPolicy implementation. The vulnerability stems from insufficient validation when evaluating navigation requests against active permission policies. An attacker-controlled HTML document can be crafted to trigger a code path where the policy evaluation logic fails to correctly deny navigation to restricted origins or frames. The root cause maps to CWE-602 (Client-Side Enforcement of Server-Side Security), indicating the browser's client-side policy enforcement mechanism lacks proper rigor. The Chromium project assigned this a Medium severity rating; the CVSS 3.1 score of 6.5 reflects the network-reachable attack vector, low complexity, requirement for user interaction, and integrity impact without confidentiality or availability compromise.

Business impact

This flaw could allow attackers to circumvent navigation policies meant to protect users from malicious or untrusted content. In enterprise environments where Permissions Policy is used to restrict employee access to certain domains or enforce navigation rules, successful exploitation could lead to unauthorized navigation, potential credential harvesting, or social engineering attacks. The integrity impact suggests attackers might alter the intended navigation flow or trick users into visiting unintended destinations. Organizations relying on Permissions Policy as part of their content security posture should treat this as a control gap until patching is complete.

Affected systems

This vulnerability affects Google Chrome installations running versions prior to 150.0.7871.47. All platforms running vulnerable Chrome versions—Windows, macOS, Linux, Android, and iOS—are in scope. The vulnerability is user-triggered, so only Chrome instances that load attacker-controlled HTML pages are at immediate risk. Organizations with Chrome as a standard browser or developers who rely on Permissions Policy for security controls should prioritize inventory and patching efforts.

Exploitability

Exploitation is straightforward: an attacker crafts an HTML page that leverages the policy enforcement gap and hosts it on the web or embeds it in a phishing email. When a user with a vulnerable Chrome version visits or is redirected to that page, the attack triggers automatically upon interaction (e.g., clicking a link). No special user privileges, authentication bypass, or complex configuration is required. The network-accessible attack vector and low complexity mean widespread exploitation is feasible, though the requirement for user interaction (opening a page, clicking a link) raises the bar slightly compared to fully automatic attacks. As of the published date, this vulnerability is not on the CISA Known Exploited Vulnerabilities (KEV) catalog, suggesting either no public exploits have been released or weaponized in the wild, or the threat is still emerging.

Remediation

Users and administrators should update Google Chrome to version 150.0.7871.47 or later as soon as practical. Chrome's auto-update mechanism should deliver patches within days for most users, but manual verification is prudent for critical environments. Organizations managing Chrome through enterprise deployment tools should prepare and test the patch in a staging environment before rolling out broadly. Interim mitigations are limited; however, user awareness training to avoid clicking suspicious links and blocking known attacker domains at the network level can reduce exposure while patching is underway.

Patch guidance

Google Chrome will deliver version 150.0.7871.47 or later through its standard auto-update channel. For enterprise deployments, consult your organization's Chrome management console (Google Admin, Microsoft Intune, or equivalent) to track and deploy the update to all managed devices. Verify completion by checking the About Chrome page (chrome://about) to confirm the installed version. For organizations with restricted auto-update policies, manually download the latest Chrome installer from Google's official channels. Test the patch in a non-production environment first, especially if Permissions Policy configurations are critical to your security model.

Detection guidance

Detection of exploitation is challenging post-facto, as successful attacks leave minimal forensic traces in Chrome's local logs. However, monitor for suspicious navigation patterns: users unexpectedly accessing restricted domains, cross-origin frame navigations that should have been blocked, or repeated visits to pages known to host policy-bypass payloads. Consider deploying a web application firewall (WAF) or DNS filtering to block known attacker infrastructure. On the endpoint, monitor Chrome process activity for unusual child process spawning or network connections initiated from the browser. Threat intelligence feeds may eventually tag malicious domains exploiting this flaw; integrate those into your detection workflows.

Why prioritize this

This vulnerability merits prompt patching due to its network-reachable attack vector, low complexity, and potential for widespread exploitation. While not yet listed as actively exploited in the wild, the Medium CVSS score and policy-bypass nature make it a meaningful security control gap. For organizations where Permissions Policy is a key part of content security architecture, this is a high-priority fix. For general users and organizations without explicit Permissions Policy dependencies, it should still be patched within the standard Chrome update cycle (typically 1–2 weeks after release), but it is not an emergency that requires immediate out-of-band deployment.

Risk score, explained

The CVSS 3.1 score of 6.5 (Medium) reflects: (1) Network-accessible attack vector—attacker can exploit remotely via a crafted HTML page; (2) Low attack complexity—no special conditions or configuration bypass needed; (3) User interaction required—user must open or interact with the malicious page; (4) Integrity impact—unauthorized navigation or policy bypass can alter expected behavior; (5) No confidentiality or availability impact—the flaw does not leak data or crash the browser. The Medium severity appropriately balances the ease of exploitation against the limited scope of impact (navigation/integrity only, not RCE or data theft).

Frequently asked questions