CVE-2026-13815: Google Chrome Use After Free Vulnerability

CVE-2026-13815 Overview

CVE-2026-13815 is a use-after-free vulnerability in the Blink rendering engine used by Google Chrome. The flaw affects Chrome versions prior to 150.0.7871.47 and allows a remote attacker to execute arbitrary code inside the browser sandbox via a crafted HTML page. Google assigned the issue a Chromium security severity of High.

Exploitation requires user interaction, meaning the victim must visit an attacker-controlled or compromised website. Successful exploitation yields code execution within the renderer process, providing an attacker with a foothold that can be chained with a sandbox escape for full system compromise.

Critical Impact
A remote attacker can trigger memory corruption in Blink through a crafted web page and execute arbitrary code inside the Chrome renderer sandbox.

Affected Products

Google Chrome versions prior to 150.0.7871.47
Chromium-based browsers embedding vulnerable Blink builds
Desktop platforms served by the Chrome Stable channel

Discovery Timeline

2026-06-30 - CVE-2026-13815 published to NVD
2026-07-02 - Last updated in NVD database

Technical Details for CVE-2026-13815

Vulnerability Analysis

The vulnerability is a use-after-free (UAF) condition [CWE-416] in Blink, the rendering engine responsible for parsing and executing HTML, CSS, and DOM operations in Chrome. A UAF occurs when memory is released back to the allocator but a dangling pointer to that memory continues to be dereferenced. An attacker who controls the reclaimed allocation can steer program flow through corrupted virtual table pointers or function pointers.

Because Blink processes untrusted web content, any HTML page loaded in the browser can reach the vulnerable code path. The attacker crafts a page that manipulates DOM lifetimes, garbage collection, or event dispatching to trigger the freed-object reuse. The result is arbitrary code execution inside the renderer process, though execution remains confined to the Chrome sandbox absent a separate escape.

Root Cause

The root cause is improper object lifetime management inside Blink. A component holds a raw pointer or stale reference to a DOM or garbage-collected object after that object has been destroyed. Chromium bug tracker entry 511722207 contains the technical details, which remain restricted pending broader patch adoption.

Attack Vector

The attack vector is network-based through the web. An attacker hosts a crafted HTML page and lures a user to visit it through phishing, malvertising, or a watering-hole compromise. When the page loads, JavaScript and DOM manipulation trigger the freed-object reuse and hijack control flow inside the renderer.

No verified public proof-of-concept code exists for CVE-2026-13815 at this time. Refer to the Chromium Issue Tracker Entry for authoritative technical details as they become available.

Detection Methods for CVE-2026-13815

Indicators of Compromise

Chrome renderer processes crashing with access violations or heap corruption signatures shortly after visiting an unfamiliar URL
Outbound connections from chrome.exe child processes to newly registered or low-reputation domains hosting HTML payloads
Unexpected child processes spawned from Chrome renderer processes, which is atypical for sandboxed renderers

Detection Strategies

Inventory Chrome installations and flag any version below 150.0.7871.47 on managed endpoints
Correlate browser crash telemetry with recent web navigation history to identify suspicious pages
Monitor for anomalous renderer behavior such as memory scan patterns consistent with heap grooming

Monitoring Recommendations

Ingest Chrome update and version telemetry into the SIEM to track patch compliance across the fleet
Track process lineage from chrome.exe and alert on non-standard child processes or injected modules
Baseline outbound traffic from browser processes and alert on connections to newly observed domains following crash events

How to Mitigate CVE-2026-13815

Immediate Actions Required

Update Google Chrome to version 150.0.7871.47 or later on all managed endpoints
Restart the browser after applying the update to load the patched Blink binary
Verify update rollout using enterprise management tooling and audit any endpoints stuck on prior versions

Patch Information

Google addressed CVE-2026-13815 in the Chrome Stable channel release 150.0.7871.47. Details are available in the Google Chrome Update Bulletin. Chromium-based browsers that embed Blink should incorporate the upstream fix and issue vendor-specific updates.

Workarounds

Restrict browsing to trusted sites through enterprise web filtering while patch deployment is in progress
Enforce Chrome auto-update policies via group policy or MDM to prevent version drift
Consider disabling JavaScript on high-risk endpoints until the update has been verified as installed

bash

# Verify installed Chrome version on Windows endpoints
reg query "HKLM\Software\Google\Update\Clients\{8A69D345-D564-463C-AFF1-A69D9E530F96}" /v pv

# Force Chrome update on Linux
sudo apt-get update && sudo apt-get install --only-upgrade google-chrome-stable