CVE-2026-7907: Google Chrome Use After Free Vulnerability

CVE-2026-7907 Overview

CVE-2026-7907 is a use-after-free vulnerability in the Document Object Model (DOM) implementation of Google Chrome. The flaw affects Chrome versions prior to 148.0.7778.96 across Windows, macOS, and Linux. A remote attacker can exploit the issue by serving a crafted HTML page to a victim, triggering memory corruption and arbitrary code execution within the Chrome sandbox. The vulnerability is tracked under CWE-416 and was disclosed through the Chromium security process.

Critical Impact
Remote attackers can execute arbitrary code inside the Chrome renderer sandbox by luring users to a malicious web page, enabling further sandbox-escape chains and credential or session theft.

Affected Products

Google Chrome prior to 148.0.7778.96 on Microsoft Windows
Google Chrome prior to 148.0.7778.96 on Apple macOS
Google Chrome prior to 148.0.7778.96 on Linux

Discovery Timeline

2026-05-06 - CVE-2026-7907 published to NVD
2026-05-06 - Last updated in NVD database
2026-05 - Google publishes Chrome stable channel update addressing the issue via the Google Chrome Update Announcement

Technical Details for CVE-2026-7907

Vulnerability Analysis

The vulnerability is a use-after-free condition in Chrome's DOM implementation. Use-after-free flaws occur when code references heap memory after it has been released, allowing attackers to influence the contents of that memory before reuse. In a browser DOM, object lifetimes are tied to script-driven events, mutations, and garbage collection cycles. Mismanaged references between JavaScript wrappers and native C++ DOM nodes create opportunities for dangling pointers.

An attacker who controls the freed object's replacement can hijack virtual function dispatch or corrupt internal state. This typically yields arbitrary read/write within the renderer process and ultimately code execution. Exploitation requires user interaction, specifically visiting a crafted HTML page or loading attacker-controlled content inside an iframe.

Execution remains constrained by the Chrome sandbox. Threat actors commonly chain DOM use-after-free bugs with a sandbox-escape vulnerability to achieve full system compromise.

Root Cause

The root cause is improper lifetime management of DOM objects, classified under CWE-416: Use After Free. A DOM node or related object is freed while another code path retains a pointer to it. Subsequent dereference of that stale pointer drives the memory corruption primitive used for code execution. Additional technical context is tracked in the Chromium Issue Tracker Entry.

Attack Vector

The attack vector is network-based. An attacker hosts a malicious HTML page or injects crafted markup and script into a compromised site. When a Chrome user loads the page, the page triggers the vulnerable DOM code path. Malvertising, watering-hole campaigns, and phishing links are realistic delivery mechanisms.

The vulnerability mechanism is described in prose only. No public proof-of-concept exploit code is available. Refer to the Chromium issue tracker for technical disclosure details once the embargo lifts.

Detection Methods for CVE-2026-7907

Indicators of Compromise

Chrome renderer process crashes (SIGSEGV, EXCEPTION_ACCESS_VIOLATION) tied to DOM operations and accompanied by minidumps in Crashpad directories.
Outbound connections from chrome.exe to newly registered or low-reputation domains immediately after browsing activity.
Spawning of unexpected child processes from chrome.exe, indicating a possible sandbox escape chain.
Persistence artifacts written to user profile directories shortly after Chrome navigation events.

Detection Strategies

Inventory installed Chrome versions across endpoints and flag any build below 148.0.7778.96.
Hunt for repeated renderer crashes correlated to specific URLs or ad networks.
Inspect web proxy logs for HTML responses containing heavily obfuscated JavaScript that manipulates DOM nodes and triggers garbage collection.
Correlate Chrome process telemetry with EDR behavioral signals such as unexpected memory allocations, RWX regions, or shellcode-style execution flow inside renderer processes.

Monitoring Recommendations

Centralize Chrome version telemetry through enterprise management tooling and alert on outdated installs.
Forward browser crash reports and EDR process events to a SIEM or data lake for correlation against threat intelligence.
Monitor DNS and proxy traffic for known exploit-kit infrastructure delivering crafted HTML payloads.
Track child-process creation from chrome.exe and alert on non-standard binaries or LOLBins.

How to Mitigate CVE-2026-7907

Immediate Actions Required

Update Google Chrome to 148.0.7778.96 or later on all Windows, macOS, and Linux endpoints.
Restart Chrome after the update to ensure the patched binaries are loaded into all renderer processes.
Verify Chromium-based enterprise browsers and embedded WebView components track the same upstream fix.
Audit endpoints that disable automatic updates and force a managed rollout through MDM or group policy.

Patch Information

Google addressed CVE-2026-7907 in the Chrome stable channel release 148.0.7778.96. Administrators should consult the Google Chrome Update Announcement for the full set of fixes shipped in the same update and the Chromium Issue Tracker Entry for issue-specific details. No public exploit and no CISA KEV listing exist at the time of publication.

Workarounds

Restrict browsing to trusted sites using enterprise URL allowlists until patching is complete.
Enable Chrome's Site Isolation and Enhanced Safe Browsing where not already active.
Deploy network-level filtering to block known malicious advertising and exploit-kit domains.
Reduce attack surface for high-risk users by disabling JavaScript on untrusted origins through enterprise policy.

bash

# Configuration example: enforce minimum Chrome version via Windows Group Policy registry
reg add "HKLM\Software\Policies\Google\Chrome" /v TargetVersionPrefix /t REG_SZ /d "148.0.7778.96" /f
reg add "HKLM\Software\Policies\Google\Chrome" /v ComponentUpdatesEnabled /t REG_DWORD /d 1 /f

# Linux: verify installed version
google-chrome --version