CVE-2026-13842 Overview
CVE-2026-13842 is a URL spoofing vulnerability affecting Google Chrome for iOS versions prior to 150.0.7871.47. The flaw stems from an inappropriate implementation in Chrome's Omnibox (address bar) rendering logic. A remote attacker can craft a malicious HTML page that manipulates the displayed URL, misleading users about the true origin of a page. The issue is classified under [CWE-451: User Interface (UI) Misrepresentation of Critical Information]. Chromium rates the security severity as High, while the NVD assigns a medium CVSS score reflecting limited integrity impact and required user interaction. This class of vulnerability is commonly leveraged in phishing and credential-harvesting campaigns.
Critical Impact
Attackers can spoof the Omnibox URL bar to impersonate trusted domains, enabling convincing phishing attacks against Chrome for iOS users.
Affected Products
- Google Chrome for iOS prior to version 150.0.7871.47
- Apple iPhone OS devices running vulnerable Chrome builds
- Any iOS deployment using Chrome as a browser client
Discovery Timeline
- 2026-06-30 - CVE-2026-13842 published to NVD
- 2026-07-01 - Last updated in NVD database
Technical Details for CVE-2026-13842
Vulnerability Analysis
The vulnerability resides in Chrome for iOS's handling of URL display within the Omnibox. When a crafted HTML page triggers specific navigation or rendering sequences, the browser fails to correctly synchronize the displayed URL with the actual document origin. This allows an attacker-controlled page to appear as if it were served from a legitimate domain.
The flaw requires user interaction. A victim must visit the malicious page, typically delivered through phishing links, malvertising, or compromised sites. Once loaded, the attacker's content is rendered under a spoofed URL, bypassing a core browser trust indicator.
Although the vulnerability does not permit code execution or direct data theft, it undermines the primary visual signal users rely on to verify site authenticity. This makes it a strong enabler for credential phishing and social engineering.
Root Cause
The root cause is an inappropriate implementation in the Omnibox display logic specific to the iOS build of Chrome. The browser updates or preserves the URL bar state under conditions that permit attacker-controlled HTML to influence what the user sees.
Attack Vector
Exploitation occurs over the network. An attacker hosts a crafted HTML page and lures a victim to open it in Chrome for iOS. No authentication is required, and the attack complexity is low. The victim's interaction with the crafted content triggers the spoofed display in the address bar. See the Chromium Issue Tracker Entry for additional technical context.
Detection Methods for CVE-2026-13842
Indicators of Compromise
- Chrome for iOS clients reporting a User-Agent string with version below 150.0.7871.47
- Web traffic to newly registered domains hosting HTML that manipulates history.pushState, history.replaceState, or navigation timing to trigger URL desynchronization
- Phishing pages referencing legitimate brand domains delivered exclusively to iOS Chrome User-Agents
Detection Strategies
- Inventory Chrome for iOS versions across managed mobile devices and flag builds older than 150.0.7871.47
- Correlate mobile web gateway logs with threat intelligence feeds for domains associated with credential phishing campaigns
- Monitor for anomalous authentication events originating from mobile devices shortly after browsing sessions to untrusted domains
Monitoring Recommendations
- Ingest mobile browser telemetry and web proxy logs into a centralized analytics platform for correlation
- Alert on repeated user visits to typosquatted or lookalike domains resolved from Chrome iOS clients
- Track credential submission events on mobile devices immediately following visits to unclassified or low-reputation domains
How to Mitigate CVE-2026-13842
Immediate Actions Required
- Update Google Chrome for iOS to version 150.0.7871.47 or later through the Apple App Store
- Enforce automatic app updates on managed iOS fleets via mobile device management (MDM) policies
- Communicate phishing risk awareness to users, emphasizing verification of site legitimacy beyond the URL bar
Patch Information
Google addressed the issue in Chrome for iOS 150.0.7871.47. Details are published in the Google Chrome Desktop Update release notes. iOS users should install the update from the App Store as soon as it becomes available.
Workarounds
- Use an alternate patched browser on iOS until Chrome is updated on affected devices
- Configure MDM policies to restrict browsing to trusted domains through content filtering
- Deploy web filtering at the network egress to block known phishing and lookalike domains
# Verify Chrome for iOS version via MDM query or user check
# In Chrome for iOS: navigate to chrome://version
# Confirm reported version is >= 150.0.7871.47
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
