CVE-2026-11248: Google Chrome Auth Bypass Vulnerability

CVE-2026-11248 Overview

CVE-2026-11248 is a navigation restriction bypass in the Google Lens component of Google Chrome. Versions of Chrome prior to 149.0.7827.53 contain an inappropriate implementation that allows a remote attacker to bypass navigation restrictions through a crafted HTML page. The flaw is categorized under [CWE-693] (Protection Mechanism Failure). Chromium rates the security severity as Low, while the CVSS v3.1 base score is 8.8 due to the network attack vector and potential impact on confidentiality, integrity, and availability after user interaction. The vulnerability affects Chrome on Windows, macOS, and Linux.

Critical Impact
A remote attacker can serve a crafted HTML page that bypasses Google Lens navigation restrictions, enabling redirection to attacker-controlled destinations that should otherwise be blocked.

Affected Products

Google Chrome prior to 149.0.7827.53
Microsoft Windows desktop installations of Chrome
Apple macOS and Linux desktop installations of Chrome

Discovery Timeline

2026-06-05 - CVE-2026-11248 published to NVD
2026-06-05 - Last updated in NVD database

Technical Details for CVE-2026-11248

Vulnerability Analysis

The vulnerability resides in Google Lens, the visual search feature integrated into Chrome. Google Lens enforces navigation restrictions that limit which URLs and resources the feature can load on behalf of the user. An inappropriate implementation of those restrictions allows attacker-supplied HTML content to redirect or trigger navigations that the policy should reject. The result is a protection mechanism failure aligned with [CWE-693].

Exploitation requires user interaction, consistent with the UI:R element of the CVSS vector. A victim must visit a crafted page or invoke Google Lens on attacker-influenced content. Because the bypass affects the browser's navigation policy, downstream impact can include credential phishing flows, exposure to additional browser-side vulnerabilities, or staging of further attack chains against confidentiality and integrity.

Root Cause

The root cause is incomplete enforcement of navigation policy within the Google Lens feature path. The component does not consistently validate or constrain navigations originating from crafted HTML inputs, breaking the security boundary that separates Lens-initiated navigations from arbitrary attacker-controlled destinations.

Attack Vector

The attack is network-based and unauthenticated. An attacker hosts a crafted HTML page and lures the victim to open it in a vulnerable Chrome build. When the page is processed in a flow that interacts with Google Lens, the navigation restriction can be bypassed. No prior privileges on the target system are required. Refer to the Chromium Issue Tracker Entry for upstream technical context.

Detection Methods for CVE-2026-11248

Indicators of Compromise

Chrome process versions reporting builds earlier than 149.0.7827.53 after the patch release date
Browser navigation events to unexpected external domains immediately following Google Lens invocations
Outbound HTTP requests from chrome.exe, Google Chrome, or chrome (Linux) to newly registered or low-reputation domains coinciding with image-search activity

Detection Strategies

Inventory installed Chrome versions across managed endpoints and flag any host running a build below 149.0.7827.53
Correlate browser telemetry with proxy and DNS logs to identify navigations that diverge from the user's intended Lens query origin
Hunt for crafted HTML payloads referencing Lens entry points or invoking chrome:// and googleusercontent redirection patterns

Monitoring Recommendations

Ingest Chrome enterprise reporting and endpoint browser telemetry into a centralized data lake for version compliance tracking
Alert on Chrome installations that fail to auto-update within the organization's defined patch window
Monitor user reports of unexpected page redirects during image search or right-click "Search image with Google Lens" actions

How to Mitigate CVE-2026-11248

Immediate Actions Required

Update Chrome to version 149.0.7827.53 or later on all Windows, macOS, and Linux endpoints
Force a browser restart after deployment to ensure the patched binary is active
Verify enterprise auto-update policies are not disabled or delayed beyond a safe interval

Patch Information

Google addressed CVE-2026-11248 in the Chrome Stable channel update referenced in the Google Chrome Desktop Update. Administrators should deploy Chrome 149.0.7827.53 or later. The exploit prediction score (EPSS) is low at the time of publication, but the network attack vector and high impact metrics warrant prompt remediation.

Workarounds

Disable Google Lens integration through Chrome enterprise policy where business workflows permit
Restrict execution of arbitrary HTML content from untrusted sources using web proxy categorization and URL filtering
Educate users to avoid initiating Lens searches on untrusted images or pages until patching is complete

bash

# Configuration example: enforce minimum Chrome version via enterprise policy (Windows)
reg add "HKLM\Software\Policies\Google\Chrome" /v TargetVersionPrefix /t REG_SZ /d "149.0.7827.53" /f
reg add "HKLM\Software\Policies\Google\Chrome" /v ChromeVariations /t REG_DWORD /d 1 /f