CVE-2026-11632 Overview
CVE-2026-11632 is a use-after-free vulnerability in the TabStrip component of Google Chrome prior to version 149.0.7827.103. A remote attacker who convinces a user to perform specific user interface (UI) gestures can execute arbitrary code through a crafted HTML page. Chromium classifies the underlying security severity as Critical, and the vulnerability is tracked as [CWE-416]. The flaw affects Chrome on Windows, macOS, and Linux desktop builds.
Critical Impact
Successful exploitation allows arbitrary code execution in the context of the Chrome process, enabling sandbox-stage attacks, data theft, and follow-on payload delivery from a single visited web page.
Affected Products
- Google Chrome prior to 149.0.7827.103 on Microsoft Windows
- Google Chrome prior to 149.0.7827.103 on Apple macOS
- Google Chrome prior to 149.0.7827.103 on Linux
Discovery Timeline
- 2026-06-09 - CVE-2026-11632 published to NVD
- 2026-06-09 - Last updated in NVD database
Technical Details for CVE-2026-11632
Vulnerability Analysis
The vulnerability resides in the TabStrip component, which manages Chrome's tab UI and the lifecycle of associated tab objects. A use-after-free condition occurs when the browser continues to reference a TabStrip-owned object after that object has been freed. An attacker who triggers the dangling reference can place attacker-controlled data in the reclaimed memory and redirect execution flow.
Exploitation requires the victim to load a malicious HTML page and perform specific UI gestures, such as drag-and-drop, context-menu interactions, or tab manipulations. The high attack complexity and user interaction requirements explain why the base score is 7.5 despite Chromium's Critical internal rating. The EPSS probability stands at 0.128%, reflecting current low observed exploit activity.
Root Cause
The root cause is improper object lifetime management in the TabStrip code path, classified as [CWE-416] Use After Free. A pointer to a TabStrip-related object is retained and dereferenced after the object has been destroyed, allowing memory reuse to influence control data.
Attack Vector
The attack vector is network-based through web content. An attacker hosts a crafted HTML page, lures the victim to visit it, and induces the required UI gestures. Once the freed object is referenced, the renderer or browser process executes attacker-influenced code paths. See the Chromium Issue Tracker Entry for upstream technical context.
No public proof-of-concept or exploit code is available at the time of writing.
Detection Methods for CVE-2026-11632
Indicators of Compromise
- Chrome processes spawning unexpected child processes such as cmd.exe, powershell.exe, or shell interpreters immediately after browsing activity.
- Crash reports or chrome.exe faults referencing TabStrip frames in stack traces on hosts running versions below 149.0.7827.103.
- Outbound connections from the Chrome process to unfamiliar domains following user interaction with attacker-controlled pages.
Detection Strategies
- Inventory installed Chrome versions across the fleet and flag any build earlier than 149.0.7827.103.
- Monitor endpoint telemetry for browser process anomalies, including unexpected memory regions marked executable and suspicious module loads in chrome.exe.
- Correlate web proxy logs with endpoint process events to identify users who visited untrusted pages immediately before browser crashes or anomalous child processes.
Monitoring Recommendations
- Enable and centralize Chrome crash reporting to surface TabStrip-related faults that may indicate exploitation attempts.
- Track download and execution events originating from the Chrome process tree for post-exploitation payloads.
- Alert on Chrome instances communicating with newly registered or low-reputation domains shortly after user UI interactions.
How to Mitigate CVE-2026-11632
Immediate Actions Required
- Update Google Chrome to version 149.0.7827.103 or later on all Windows, macOS, and Linux endpoints.
- Force-restart Chrome after deploying the update so the patched binary is loaded into memory.
- Audit managed Chrome deployments and enterprise policies to confirm automatic updates are enabled and not blocked by proxies.
Patch Information
Google released the fix in the Stable channel update documented in the Google Chrome Update Announcement. Administrators using Chrome Browser Cloud Management or group policy should validate that clients have rolled forward to 149.0.7827.103 or newer.
Workarounds
- Restrict browsing to trusted sites through web filtering until the patch is deployed, reducing exposure to crafted HTML pages.
- Educate users to avoid interacting with unfamiliar pages that request drag-and-drop or other unusual UI gestures.
- Where feasible, deploy Chrome enterprise policies that block downloads and active content from uncategorized domains until patching completes.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
