CVE-2026-7919 Overview
CVE-2026-7919 is a use-after-free vulnerability [CWE-416] in the Aura component of Google Chrome. The flaw affects Chrome versions prior to 148.0.7778.96 across Windows, macOS, and Linux. A remote attacker who has already compromised the renderer process can leverage this issue to escape the Chrome sandbox using a crafted HTML page. Google's Chromium project rated the security severity as High. The Aura component manages window and UI primitives in Chrome, making sandbox escape through this surface particularly impactful for browser security boundaries.
Critical Impact
A successful exploit chain leads to a Chrome sandbox escape, allowing attacker code from a compromised renderer to execute outside the browser sandbox on Windows, macOS, and Linux hosts.
Affected Products
- Google Chrome versions prior to 148.0.7778.96
- Microsoft Windows (Chrome desktop client)
- Apple macOS and Linux (Chrome desktop client)
Discovery Timeline
- 2026-05-06 - CVE-2026-7919 published to NVD
- 2026-05-06 - Last updated in NVD database
- 2026-05 - Google releases stable channel update for desktop addressing the issue
Technical Details for CVE-2026-7919
Vulnerability Analysis
The vulnerability is a use-after-free condition in Chrome's Aura subsystem. Aura provides cross-platform windowing, event routing, and compositor surfaces used by the browser process. A use-after-free occurs when code retains and dereferences a pointer to memory that has already been released. Attackers can reclaim that freed memory with attacker-controlled data, then trigger the dangling reference to redirect execution or corrupt object state.
Exploitation requires the attacker to first compromise the renderer process, typically through a separate memory corruption bug in the rendering engine. Once inside the renderer, the attacker uses a crafted HTML page to drive interactions with Aura objects in the privileged browser process. Because Aura runs outside the renderer sandbox, successful exploitation crosses a critical security boundary.
The attack requires user interaction, such as visiting a malicious page, and exploitation complexity is rated high due to the prerequisite renderer compromise and timing constraints typical of use-after-free primitives.
Root Cause
The root cause is improper object lifetime management within Aura, where a reference to a freed object persists and is later dereferenced. Use-after-free bugs in Chromium frequently arise from asynchronous task posting, event dispatch ordering, or observer patterns where one component releases an object while another still holds a raw pointer.
Attack Vector
The attack vector is network-based via a crafted HTML page delivered to a victim browser. The exploit chain assumes the renderer is already compromised, then uses inter-process communication and DOM-driven events to manipulate Aura objects in the browser process. Successful exploitation results in a sandbox escape with the privileges of the Chrome browser process.
No verified proof-of-concept exploit code is publicly available. See the Chromium Issue Tracker Entry and the Google Chrome Update Announcement for vendor details.
Detection Methods for CVE-2026-7919
Indicators of Compromise
- Chrome browser process crashes referencing Aura modules or UI thread stack frames following web navigation events.
- Unexpected child processes spawned by chrome.exe or the Chrome helper binaries shortly after browsing activity.
- Outbound connections from Chrome processes to attacker-controlled infrastructure delivering crafted HTML payloads.
Detection Strategies
- Inventory installed Chrome versions across managed endpoints and flag any build below 148.0.7778.96.
- Monitor for renderer process compromise indicators that often precede sandbox-escape exploitation.
- Correlate browser crash telemetry with web traffic to surface repeated Aura-related faults that may indicate exploitation attempts.
Monitoring Recommendations
- Enable browser crash reporting and forward dumps to a centralized analysis pipeline.
- Track process lineage from Chrome to detect post-exploitation child processes or LOLBins execution.
- Alert on Chrome processes loading unusual modules or writing executable content to user-writable paths.
How to Mitigate CVE-2026-7919
Immediate Actions Required
- Update Google Chrome to version 148.0.7778.96 or later on Windows, macOS, and Linux endpoints.
- Restart Chrome after the update so the patched binary is loaded into memory.
- Verify managed deployments by querying installed Chrome versions through your endpoint management tooling.
Patch Information
Google addressed CVE-2026-7919 in the stable channel update announced in the Google Chrome Update Announcement. Upgrading to Chrome 148.0.7778.96 or later resolves the use-after-free in Aura. Chromium-based browsers that consume upstream patches should also be updated once their vendors ship the corresponding release.
Workarounds
- Restrict browsing to trusted sites until patching is complete, reducing exposure to crafted HTML payloads.
- Apply enterprise policy to disable risky extensions and limit attack surface in the renderer.
- Where feasible, enforce site isolation and ensure Chrome's sandbox is enabled on all managed endpoints.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
