CVE-2026-13902 Overview
CVE-2026-13902 is a user interface (UI) spoofing vulnerability in Google Chrome for iOS versions prior to 150.0.7871.47. The flaw stems from an inappropriate implementation in Chrome for iOS that allows a remote attacker to spoof browser UI elements through a crafted HTML page. The vulnerability is classified under [CWE-451: User Interface (UI) Misrepresentation of Critical Information]. Successful exploitation requires user interaction, such as visiting a malicious webpage. Google assigned this issue a Medium severity rating in the Chromium security tracker.
Critical Impact
Attackers can misrepresent trusted browser UI elements to deceive users into trusting malicious content, enabling phishing and credential theft campaigns targeting mobile users.
Affected Products
- Google Chrome for iOS prior to version 150.0.7871.47
Discovery Timeline
- 2026-06-30 - CVE CVE-2026-13902 published to NVD
- 2026-07-01 - Last updated in NVD database
Technical Details for CVE-2026-13902
Vulnerability Analysis
The vulnerability resides in Chrome for iOS and involves improper handling of content rendering that permits UI elements to be misrepresented. An attacker hosting a crafted HTML page can manipulate visual cues to disguise malicious content as legitimate browser chrome or trusted origin indicators. This class of flaw is tracked as [CWE-451] and typically enables phishing attacks that abuse address bar rendering, security indicators, or overlay content.
The attack requires network access and user interaction, but does not require any prior authentication or privileges. Confidentiality impact is none, integrity impact is low, and availability is unaffected — reflecting the UI-deception nature of the flaw rather than direct code execution or data exfiltration.
Root Cause
The root cause is an inappropriate implementation within Chrome for iOS that fails to prevent web content from visually overlapping or mimicking trusted UI regions. Because iOS restricts browsers to WebKit rendering, Chrome-specific UI logic on iOS must enforce separation between web content and browser-provided indicators. This vulnerability indicates that separation was insufficient in versions before 150.0.7871.47.
Attack Vector
Exploitation involves an attacker luring a Chrome iOS user to a malicious webpage containing crafted HTML. The rendered content manipulates the perceived origin, address bar, or security indicators to convince the user they are interacting with a trusted site. The user's subsequent actions — entering credentials, approving prompts, or downloading content — deliver value to the attacker. See the Chromium Issue Tracker Entry and Google Chrome Update Release for vendor context.
Detection Methods for CVE-2026-13902
Indicators of Compromise
- User reports of Chrome iOS pages displaying mismatched or suspicious address bar content following link clicks from email, SMS, or messaging applications.
- Outbound network connections from mobile devices to newly registered domains hosting HTML content that references trusted brand names.
- Credential submissions to non-corporate domains originating from Chrome for iOS user agents.
Detection Strategies
- Monitor mobile web proxy and DNS logs for user traffic to domains flagged in phishing threat intelligence feeds.
- Correlate Chrome for iOS user agent strings with access attempts against corporate identity providers from unexpected referrers.
- Deploy phishing-resistant authentication (FIDO2, passkeys) so that even a successful UI spoof does not yield usable credentials.
Monitoring Recommendations
- Track Chrome for iOS version telemetry across managed devices to identify endpoints running versions earlier than 150.0.7871.47.
- Review identity provider sign-in logs for anomalous authentications from mobile devices following user-reported suspicious links.
How to Mitigate CVE-2026-13902
Immediate Actions Required
- Update Google Chrome for iOS to version 150.0.7871.47 or later through the Apple App Store.
- Push mobile device management (MDM) policies to enforce automatic app updates for Chrome on managed iOS devices.
- Educate users to verify URLs by tapping the address bar to reveal the full origin before entering credentials.
Patch Information
Google addressed CVE-2026-13902 in Chrome for iOS version 150.0.7871.47. Details are provided in the Google Chrome Update Release and the Chromium Issue Tracker Entry.
Workarounds
- Use an alternative browser on iOS until Chrome is updated, recognizing all iOS browsers share the WebKit engine.
- Restrict Chrome for iOS from accessing high-value web applications via conditional access policies until the patched version is deployed.
- Require phishing-resistant multi-factor authentication for sensitive services so that UI-spoofed credential prompts do not grant account access.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
