CVE-2026-106241 Overview
CVE-2026-106241 is an incorrect authorization vulnerability [CWE-863] in the Search component of Google Chrome on Android. Versions prior to 155.0.8059.39 are affected. A remote attacker can leverage social engineering with a crafted HTML page to potentially execute arbitrary code outside the Chrome sandbox. Sandbox escape on a mobile browser grants attackers access to resources beyond the renderer process, including user data and other applications. Google's Chromium project rates the underlying issue as Medium severity, while the NVD CVSS score reflects the broader impact of a sandbox escape triggered through a web page.
Critical Impact
Successful exploitation allows arbitrary code execution outside the Chrome sandbox on Android devices, breaking the primary isolation boundary that protects user data and the operating system.
Affected Products
- Google Chrome on Android prior to 155.0.8059.39
- Google Android (as the host operating system for the vulnerable Chrome build)
- Chromium-based Search component shipped with affected Chrome versions
Discovery Timeline
- 2026-10-06 - CVE-2026-106241 published to the National Vulnerability Database
- 2026-10-07 - Last updated in NVD database
Technical Details for CVE-2026-106241
Vulnerability Analysis
The flaw resides in the Search feature of Chrome on Android. Authorization checks fail to correctly validate operations initiated from a crafted HTML page. An attacker who convinces a user to visit a malicious page can cross trust boundaries normally enforced between the renderer sandbox and higher-privileged browser components. Because the sandbox is the main containment layer for web content on Android, escaping it exposes the host process context and user data stored by Chrome. The vulnerability requires user interaction, consistent with social engineering lures such as phishing links, malicious ads, or redirects from compromised sites.
Root Cause
The root cause is incorrect authorization [CWE-863] in the Search code path. A privileged action can be invoked without verifying that the caller, originating from untrusted web content, has the authority to perform it. The missing or incomplete authorization check allows renderer-side content to influence operations that should be restricted to the browser process.
Attack Vector
Exploitation is network-based and requires user interaction. The attacker hosts a crafted HTML page and lures a victim running a vulnerable Chrome on Android build to open it. The page triggers the flawed Search code path to execute code outside the sandbox. No authentication or prior access to the device is needed. See the Chromium Issue Tracker #501729675 for the technical bug reference.
No verified public exploit code is available for this issue. The vulnerability is described in prose without synthetic proof-of-concept content.
Detection Methods for CVE-2026-106241
Indicators of Compromise
- Chrome on Android processes spawning unexpected child processes or accessing files outside the browser's sandboxed storage.
- Outbound connections from mobile devices to newly registered or low-reputation domains immediately after a user clicks a link.
- Unusual intent handling or inter-process communication involving the Chrome package on Android endpoints under mobile management.
Detection Strategies
- Inventory Chrome for Android versions across managed mobile fleets and flag any build earlier than 155.0.8059.39.
- Correlate browser telemetry with network proxy logs to identify users visiting suspicious HTML pages delivered via phishing or malvertising.
- Monitor mobile threat defense telemetry for anomalous Chrome behavior, including unexpected privilege transitions or crash reports referencing the Search component.
Monitoring Recommendations
- Enable centralized logging for mobile browser version data and alert on devices that remain on vulnerable Chrome builds past the patch deadline.
- Track URL reputation on egress devices and quarantine traffic to domains hosting crafted HTML known to target Chrome vulnerabilities.
- Review crash and error reports from Android endpoints for signatures consistent with sandbox-escape exploitation attempts.
How to Mitigate CVE-2026-106241
Immediate Actions Required
- Update Google Chrome on Android to version 155.0.8059.39 or later through Google Play.
- Enforce automatic updates for Chrome on managed Android devices using mobile device management policies.
- Deliver user awareness guidance warning against opening links from unknown sources on mobile browsers.
- Validate patch deployment by auditing installed Chrome versions across the Android fleet.
Patch Information
Google released the fix in the Chrome Stable Channel update covering version 155.0.8059.39 for Android. Refer to the Chrome Stable Channel Update advisory for the official patch announcement and version details.
Workarounds
- Restrict use of Chrome on Android until the patched version is installed, and route users to a patched alternative browser where feasible.
- Apply web filtering at the network edge or via mobile threat defense to block access to known malicious HTML lures.
- Disable or limit high-risk Chrome features exposed to untrusted content on managed devices via enterprise policy where supported.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.