CVE-2026-14054: Google Chrome Auth Bypass Vulnerability

CVE-2026-14054 Overview

CVE-2026-14054 is an insufficient policy enforcement vulnerability in the Network component of Google Chrome prior to version 150.0.7871.47. A remote attacker can bypass navigation restrictions by serving a crafted HTML page to a targeted user. The flaw is categorized under [CWE-602] (Client-Side Enforcement of Server-Side Security) and requires user interaction, such as visiting an attacker-controlled page. Chromium rated the internal security severity as Low, while NVD assigned a CVSS 3.1 base score of 4.3. Successful exploitation permits limited integrity impact through navigation restriction bypass but does not expose data or crash the browser.

Critical Impact
A remote attacker can bypass Chrome navigation restrictions via a crafted HTML page, enabling unauthorized redirection or policy circumvention when a user visits the page.

Affected Products

Google Chrome versions prior to 150.0.7871.47
Chromium-based browsers sharing the affected Network component
Desktop stable channel builds across Windows, macOS, and Linux

Discovery Timeline

2026-06-30 - CVE-2026-14054 published to NVD
2026-07-01 - Last updated in NVD database

Technical Details for CVE-2026-14054

Vulnerability Analysis

The vulnerability resides in the Network component of Chrome, which enforces navigation policies such as cross-origin restrictions, iframe sandboxing, and URL scheme handling. Insufficient policy enforcement allows a crafted HTML page to circumvent these navigation restrictions. An attacker uses this weakness to influence the browser into performing navigations that Chrome's policy layer should have blocked.

The underlying weakness maps to [CWE-602], where security decisions rely on enforcement points that can be manipulated or bypassed by client-supplied content. Exploitation does not yield code execution or direct data exposure. Instead, it enables limited integrity impact, such as redirecting users, loading disallowed URLs, or bypassing intended navigation policy boundaries. The EPSS probability is 0.23% (13.71 percentile), indicating low observed exploitation likelihood in the near term.

Root Cause

The root cause is inadequate validation and enforcement of navigation policy checks within Chrome's Network stack. The component fails to consistently apply restrictions when processing specific HTML structures or navigation sequences, allowing crafted content to slip past policy gates.

Attack Vector

The attack requires the victim to load a malicious HTML page. Once rendered, the crafted content triggers the navigation flow that bypasses Chrome's enforcement, producing an unauthorized navigation outcome. No authentication is required, and the attack occurs over the network. Refer to the Chromium Issue Tracker Entry for technical details.

No verified public proof-of-concept code is available for this issue.

Detection Methods for CVE-2026-14054

Indicators of Compromise

Browser telemetry showing unexpected navigations to disallowed origins immediately after loading an untrusted page.
Web proxy logs recording redirect chains that terminate at attacker-controlled domains following visits to newly registered or low-reputation sites.
Chrome versions below 150.0.7871.47 observed in endpoint inventory during active browsing sessions.

Detection Strategies

Inventory installed Chrome versions across managed endpoints and flag builds earlier than 150.0.7871.47.
Correlate HTTP referrer chains in proxy or DNS logs to identify anomalous cross-origin navigations sourced from unknown HTML pages.
Monitor endpoint process telemetry for Chrome child processes initiating navigations to domains outside expected user browsing patterns.

Monitoring Recommendations

Ingest browser and proxy logs into a centralized analytics platform and alert on navigations that violate corporate URL allowlists.
Track Chrome update compliance through configuration management tools and alert when unpatched versions persist beyond the patch window.
Review threat intelligence feeds for domains distributing crafted HTML content targeting Chromium navigation policy bypasses.

How to Mitigate CVE-2026-14054

Immediate Actions Required

Update Google Chrome to version 150.0.7871.47 or later on all managed endpoints.
Force-restart browser sessions after deployment to ensure the patched binary is loaded into memory.
Verify Chromium-based third-party browsers have incorporated the upstream fix before considering them remediated.

Patch Information

Google addressed the vulnerability in Chrome stable channel release 150.0.7871.47. Deployment details are available in the Google Chrome Update Release announcement. Enterprise administrators should distribute the update through their standard browser management channel, such as Chrome Browser Cloud Management or platform package managers.

Workarounds

Enforce URL allowlisting at the web proxy layer to constrain navigations to approved destinations until patching is complete.
Apply Chrome enterprise policies such as URLBlocklist to restrict access to categories of sites likely to host crafted HTML payloads.
Educate users to avoid clicking links from untrusted sources while unpatched Chrome installations remain in the environment.

bash

# Configuration example: Chrome enterprise URL blocklist policy (Linux)
cat <<EOF | sudo tee /etc/opt/chrome/policies/managed/url_blocklist.json
{
  "URLBlocklist": [
    "*"
  ],
  "URLAllowlist": [
    "https://*.corp.example.com",
    "https://updates.example.com"
  ]
}
EOF