CVE-2026-17901 Overview
CVE-2026-17901 is an input validation vulnerability in the Sharing component of Google Chrome on Android. Versions prior to 151.0.7922.72 fail to properly validate untrusted input, allowing a remote attacker to bypass navigation restrictions via malicious network traffic. Google's Chromium project rates the security severity as Low. The flaw affects the browser's handling of shared content and can enable an attacker to redirect users past intended navigation guardrails without user interaction beyond normal browsing. Google has addressed the issue in the Chrome stable channel update tracked in the Chromium issue tracker.
Critical Impact
Remote attackers can bypass Chrome navigation restrictions on Android devices by delivering crafted network traffic to the Sharing component.
Affected Products
- Google Chrome on Android prior to version 151.0.7922.72
- Chromium-based mobile browsers incorporating the affected Sharing component
- Android devices running vulnerable Chrome builds
Discovery Timeline
- 2026-07-30 - CVE-2026-17901 published to NVD
- 2026-07-30 - Last updated in NVD database
Technical Details for CVE-2026-17901
Vulnerability Analysis
The vulnerability resides in Chrome's Sharing feature on Android. The component processes untrusted input received over the network without applying sufficient validation. An attacker who controls or influences network traffic delivered to the browser can craft data that the Sharing component accepts as legitimate. This bypasses the navigation restrictions Chrome normally enforces to protect users from unintended URL transitions.
Navigation restrictions in Chrome exist to prevent silent redirection to attacker-controlled origins and to enforce origin isolation. When these controls are bypassed, an attacker can steer the browser to destinations that would otherwise be blocked. Google classified the Chromium security severity as Low, indicating limited direct impact but retained value as a building block in multi-stage attacks.
Root Cause
The root cause is insufficient validation of untrusted input within the Sharing feature. The component accepts network-delivered data without applying the checks required to enforce Chrome's navigation policy. See the Chromium Issue Tracker Entry for the upstream defect record.
Attack Vector
A remote attacker delivers crafted network traffic to a vulnerable Chrome for Android client. The Sharing component processes the payload and executes a navigation that would normally be blocked. Exploitation requires the attacker to influence traffic reaching the browser, which can be achieved through a malicious web page, a compromised network path, or attacker-controlled content shared to the browser.
No verified public proof-of-concept code is available. Refer to the Google Chrome Stable Update announcement for release-level details.
Detection Methods for CVE-2026-17901
Indicators of Compromise
- Chrome for Android clients running versions earlier than 151.0.7922.72 on managed devices
- Unexpected navigation events originating from the Chrome Sharing surface
- Outbound requests to unfamiliar domains immediately following share-intent activity
Detection Strategies
- Inventory mobile browser versions via mobile device management and flag Chrome for Android builds below 151.0.7922.72
- Correlate web proxy logs with browser telemetry to identify navigations that skip standard referrer or origin checks
- Review Android application update logs to confirm timely delivery of the Chrome stable channel update
Monitoring Recommendations
- Ingest browser and mobile endpoint telemetry into a centralized analytics platform for version and behavior baselining
- Alert on Chrome for Android instances that remain on outdated builds beyond the organization's patch SLA
- Monitor DNS and HTTP traffic from mobile devices for redirection patterns consistent with navigation-restriction bypass
How to Mitigate CVE-2026-17901
Immediate Actions Required
- Update Google Chrome on Android to version 151.0.7922.72 or later through the Google Play Store
- Enforce automatic Chrome updates on managed Android devices via mobile device management policies
- Verify fleet compliance by querying Chrome version strings across managed endpoints
Patch Information
Google released the fix in the Chrome stable channel update documented in the Google Chrome Stable Update advisory. The corresponding upstream defect is tracked in the Chromium Issue Tracker Entry. Users should install Chrome 151.0.7922.72 or later on Android.
Workarounds
- Restrict use of vulnerable Chrome builds on Android until the update is applied
- Route mobile browser traffic through inspection proxies that enforce navigation and origin policies
- Advise users to avoid interacting with untrusted share links until devices are patched
# Verify installed Chrome version on an Android device via ADB
adb shell dumpsys package com.android.chrome | grep versionName
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
