CVE-2026-13894 Overview
CVE-2026-13894 is an insufficient policy enforcement vulnerability in the Network component of Google Chrome. The flaw affects versions prior to 150.0.7871.47 across Windows, macOS, and Linux. An attacker in a privileged network position can bypass navigation restrictions by delivering a crafted HTML page to a targeted user.
The issue is categorized under CWE-602: Client-Side Enforcement of Server-Side Security. Google assigned this issue a Chromium security severity of Medium. Exploitation requires user interaction, such as visiting attacker-influenced content, but does not require prior authentication.
Critical Impact
An attacker positioned on the network path can bypass Chrome's navigation restrictions and redirect users to attacker-controlled destinations through a crafted HTML page.
Affected Products
- Google Chrome versions prior to 150.0.7871.47
- Chrome desktop builds on Microsoft Windows
- Chrome desktop builds on Apple macOS and Linux
Discovery Timeline
- 2026-06-30 - CVE-2026-13894 published to NVD
- 2026-07-01 - Last updated in NVD database
Technical Details for CVE-2026-13894
Vulnerability Analysis
The vulnerability resides in Chrome's Network component, where navigation policy checks are not consistently enforced when specific HTML content is processed. Navigation restrictions in Chrome govern which resources a page can load and which cross-origin or scheme transitions are permitted. When policy enforcement is incomplete, an attacker can construct HTML that steers the browser past those checks.
The attack requires a privileged network position, such as a compromised Wi-Fi network, an on-path proxy, or a hostile ISP hop. From this position, the attacker injects or serves the crafted HTML page. Chrome then processes the content and follows a navigation path that policy should have blocked.
Exploitation impacts integrity rather than confidentiality or availability. The user does not see arbitrary code execution, but the browser can be steered toward attacker-chosen destinations. This enables downstream attacks such as credential phishing pages, malicious download prompts, or forced navigation to sites hosting additional exploits.
Root Cause
The root cause is a client-side enforcement gap in the Network stack ([CWE-602]). Policy decisions that should be validated at all navigation entry points are missed in a specific code path handling crafted HTML input. See the Chromium Issue Tracker Entry for maintained technical context.
Attack Vector
The attack proceeds over the network and requires user interaction. A user must load a page whose traffic the attacker can influence, either through direct serving or on-path modification. The attacker then delivers the crafted HTML that exercises the deficient policy check.
No verified proof-of-concept is publicly available at this time. Refer to the Google Chrome Stable Update for release-level details.
Detection Methods for CVE-2026-13894
Indicators of Compromise
- Chrome browser versions below 150.0.7871.47 reporting in endpoint inventory.
- Unexpected navigation events from HTTP responses that were modified in transit on untrusted networks.
- Client connections traversing rogue proxies, captive portals, or unknown TLS-terminating middleboxes.
Detection Strategies
- Inventory Chrome versions across managed endpoints and flag hosts running builds prior to 150.0.7871.47.
- Correlate browser telemetry with network egress logs to identify redirects following connections to untrusted networks.
- Monitor for downloads or credential prompts initiated shortly after a page navigation from an external network segment.
Monitoring Recommendations
- Ingest browser and endpoint telemetry into a centralized data lake for version and navigation-path analysis.
- Alert on Chrome instances that fail to update within the organization's patch SLA window.
- Track user reports of unexpected redirects, certificate warnings, or captive portal anomalies as early signals.
How to Mitigate CVE-2026-13894
Immediate Actions Required
- Update Google Chrome to version 150.0.7871.47 or later on all Windows, macOS, and Linux endpoints.
- Enforce automatic updates through Chrome Browser Enterprise policies or endpoint management tooling.
- Restrict use of untrusted networks or require VPN tunneling for users on public Wi-Fi.
Patch Information
Google released the fix in Chrome Stable channel version 150.0.7871.47. Deployment details are available in the Google Chrome Stable Update advisory. Chromium-derived browsers should apply the corresponding upstream patch once vendors publish updated builds.
Workarounds
- Require VPN or HTTPS-only connections to reduce exposure to on-path attackers until patching completes.
- Disable or restrict use of Chrome on shared or guest networks where a privileged network position is plausible.
- Enforce HSTS preloading and DNS-over-HTTPS to limit an attacker's ability to modify traffic in transit.
# Verify installed Chrome version on managed endpoints
# Windows (PowerShell)
(Get-Item "$env:ProgramFiles\Google\Chrome\Application\chrome.exe").VersionInfo.ProductVersion
# macOS
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --version
# Linux
google-chrome --version
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
