CVE-2026-15107 Overview
CVE-2026-15107 is a use-after-free vulnerability [CWE-416] in the IndexedDB component of Google Chrome. The flaw affects all Chrome desktop builds prior to 150.0.7871.115. A remote attacker can exploit the issue by convincing a user to load a crafted HTML page, triggering memory corruption inside the renderer process. Successful exploitation permits arbitrary code execution within the Chrome sandbox. Google classified the Chromium security severity as Medium, while the NVD scoring places this vulnerability in the high-severity range due to the network-based attack vector and impact on confidentiality, integrity, and availability.
Critical Impact
Remote attackers can execute arbitrary code inside the Chrome sandbox by luring a user to a malicious web page, providing an initial foothold for browser-based attack chains.
Affected Products
- Google Chrome for Desktop versions prior to 150.0.7871.115
- Chromium-based browsers incorporating the vulnerable IndexedDB implementation
- Downstream distributions bundling affected Chromium releases
Discovery Timeline
- 2026-07-08 - CVE-2026-15107 published to NVD
- 2026-07-09 - Last updated in NVD database
Technical Details for CVE-2026-15107
Vulnerability Analysis
The vulnerability resides in Chrome's IndexedDB implementation, a browser-provided transactional database API used by web applications for client-side structured storage. IndexedDB operates across multiple processes and coordinates asynchronous transactions between the renderer and the browser process. A use-after-free condition arises when the implementation continues to reference a heap object after that object has been released. An attacker who influences allocation and free ordering through crafted JavaScript can reclaim the freed memory with attacker-controlled data. Dereferencing the dangling pointer then redirects execution or corrupts adjacent state. Google's advisory confirms that exploitation permits arbitrary code execution inside the sandbox rather than a full sandbox escape.
Root Cause
The root cause is improper lifetime management of an IndexedDB object [CWE-416]. Asynchronous callbacks and transaction handlers retain references to objects whose owning scope has already been destroyed. When the callback resumes execution, it operates on freed memory. See the Chromium Issue Tracker Entry for the vendor's technical record.
Attack Vector
Exploitation requires user interaction. The victim must navigate to an attacker-controlled or compromised web page. The crafted page issues a sequence of IndexedDB operations that free a specific object and then reference it before garbage collection reclaims the region. No prior authentication or elevated privileges are required. Refer to the Google Chrome Desktop Update for the vendor bulletin.
No public proof-of-concept is available for this issue. Detailed exploitation code is not published; the vulnerability mechanism follows standard use-after-free patterns in browser database APIs where object destruction races with pending transaction callbacks.
Detection Methods for CVE-2026-15107
Indicators of Compromise
- Chrome renderer process crashes with heap corruption signatures referencing IndexedDB modules
- Unexpected child processes spawned from chrome.exe following visits to untrusted domains
- Outbound connections to unfamiliar hosts immediately after browser navigation events
- Modification of Chrome user profile directories by processes other than Chrome itself
Detection Strategies
- Inventory installed Chrome versions across the fleet and flag any build below 150.0.7871.115
- Monitor endpoint telemetry for anomalous behavior originating from Chrome renderer processes, including unexpected file writes and network activity
- Correlate web proxy logs with newly reported malicious domains hosting Chromium exploit content
Monitoring Recommendations
- Enable browser crash reporting and forward reports to a central analysis platform
- Alert on renderer process crashes that coincide with visits to low-reputation URLs
- Track Chrome auto-update status through management tooling to identify hosts stalled on vulnerable versions
How to Mitigate CVE-2026-15107
Immediate Actions Required
- Update Google Chrome to version 150.0.7871.115 or later on all desktop endpoints
- Restart the browser after the update to ensure the patched binary is loaded
- Verify enterprise policy does not suppress auto-updates on managed devices
- Audit Chromium-based third-party browsers and apply their corresponding patched releases
Patch Information
Google released the fix in Chrome Stable channel version 150.0.7871.115 for Desktop. Administrators should confirm deployment through the Google Chrome Desktop Update advisory and validate versions via chrome://settings/help or endpoint management tooling.
Workarounds
- Restrict browsing to trusted domains through web filtering until patching is complete
- Disable JavaScript on untrusted sites using enterprise policy or site settings to prevent IndexedDB access
- Deploy the update through managed software distribution to accelerate remediation on unmanaged endpoints
# Verify Chrome version on Linux endpoints
google-chrome --version
# Windows: query installed version via registry
reg query "HKLM\SOFTWARE\Google\Chrome\BLBeacon" /v version
# macOS: query the application bundle
defaults read /Applications/Google\ Chrome.app/Contents/Info CFBundleShortVersionString
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
