CVE-2026-7918 Overview
CVE-2026-7918 is a use-after-free vulnerability [CWE-416] in the GPU component of Google Chrome prior to version 148.0.7778.96. A remote attacker who has already compromised the renderer process can leverage a crafted HTML page to trigger the flaw and potentially escape the Chrome sandbox. Google has rated the Chromium security severity as High, and the CVSS 3.1 base score is 8.3. The vulnerability affects Chrome on Windows, macOS, and Linux. Successful exploitation breaks the security boundary between the renderer and the GPU process, enabling code execution at a higher privilege level on the host.
Critical Impact
Sandbox escape from a compromised renderer can lead to arbitrary code execution outside Chrome's sandbox, exposing the underlying operating system.
Affected Products
- Google Chrome prior to 148.0.7778.96
- Chrome on Microsoft Windows
- Chrome on Apple macOS and Linux
Discovery Timeline
- 2026-05-06 - CVE-2026-7918 published to NVD
- 2026-05-06 - Last updated in NVD database
Technical Details for CVE-2026-7918
Vulnerability Analysis
The flaw is a use-after-free condition in Chrome's GPU process. The GPU process handles graphics commands issued by renderers across the Chromium IPC boundary. When an object in the GPU process is freed but a dangling reference remains reachable, subsequent operations can dereference the stale pointer. An attacker controlling the renderer can shape the heap layout and influence which object replaces the freed allocation. This primitive enables attacker-controlled reads, writes, or virtual call dispatch inside the GPU process. Because the GPU process runs at a higher privilege level than the sandboxed renderer, successful exploitation breaks the renderer-to-GPU trust boundary and constitutes a sandbox escape.
Root Cause
The root cause is improper lifetime management of a GPU-process object referenced by code paths reachable through Chrome's GPU command interface. A reference outlives the underlying allocation, leaving a dangling pointer that is later dereferenced. CWE-416 captures this class of memory safety defect. Public technical detail beyond the Chromium issue tracker entry referenced in the advisory is restricted while users update.
Attack Vector
Exploitation requires two stages. First, the attacker must already control the renderer process, typically by chaining a separate renderer-side bug delivered through a crafted HTML page. Second, the compromised renderer issues GPU commands that trigger the use-after-free in the GPU process. User interaction is required, since the victim must load attacker-controlled web content. The attack complexity is high because the attacker must both compromise the renderer and reliably groom the GPU-process heap. No working public exploit code is currently available, and the issue is not listed in the CISA Known Exploited Vulnerabilities catalog.
No verified proof-of-concept code is published. Refer to the Chromium Issue Tracker Entry and the Google Chrome Update Announcement for vendor-controlled technical details.
Detection Methods for CVE-2026-7918
Indicators of Compromise
- Unexpected child process creation from chrome.exe or the Chrome GPU process spawning shells, scripting hosts, or rundll32.exe.
- Crashes or repeated restarts of the Chrome GPU process correlated with browsing specific URLs.
- Outbound network connections initiated by the GPU process to unfamiliar hosts.
Detection Strategies
- Inventory installed Chrome versions across managed endpoints and flag any below 148.0.7778.96.
- Hunt for anomalous parent-child relationships where a Chrome GPU process spawns native binaries outside the browser update path.
- Correlate browser crash telemetry with web proxy logs to identify pages that consistently crash the GPU process.
Monitoring Recommendations
- Forward Chrome process telemetry, crash dumps, and DNS query logs to a centralized analytics platform.
- Alert on Chrome processes loading unsigned modules or writing executable content to disk.
- Track enterprise patch compliance for Chrome through endpoint management tooling and review weekly.
How to Mitigate CVE-2026-7918
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 by all browser, renderer, and GPU processes.
- Confirm enterprise auto-update policies are not blocking the stable channel update.
Patch Information
Google released the fix in the Chrome stable channel as documented in the Stable Channel Update for Desktop. Administrators managing Chrome through Group Policy, Workspace, or MDM should verify version 148.0.7778.96 or later is enforced.
Workarounds
- Restrict access to untrusted web content through enterprise web filtering until patching completes.
- Apply browser hardening policies that limit execution of plugins and unnecessary GPU features where compatible.
- Use application allowlisting to block child processes spawned by Chrome that are not part of normal browser operation.
# Verify Chrome version on Linux
google-chrome --version
# Verify Chrome version on macOS
/Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --version
# Verify Chrome version on Windows (PowerShell)
(Get-Item "$env:ProgramFiles\Google\Chrome\Application\chrome.exe").VersionInfo.ProductVersion
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
