Google Chrome: Use after free in WebProtect
Summary
Google Chrome prior to 156.0.8078.47 contains a use-after-free vulnerability in the WebProtect component (CWE-416). A remote attacker can execute arbitrary code inside the browser sandbox by luring a user to a crafted HTML page. Exploitation requires that the user visits the page, and no privileges are needed. Chromium-based browsers such as Microsoft Edge may be affected as well.
Affected
- Google Chrome prior to 156.0.8078.47 (CVE record; the per-platform range for Windows and macOS is not confirmed)
- Android Chrome builds prior to 156.0.8078.47 (secondary source)
- Microsoft Edge prior to 156.0.4314.42 (Hong Kong CERT bulletin, not verified)
Fixed in
- Chrome 156.0.8078.47 or later (Linux, Android)
- Chrome 156.0.8078.48 or later recommended for Windows and macOS
- Microsoft Edge 156.0.4314.42 or later (to be confirmed against the MSRC entry)
Workaround
Unknown. No vendor-documented workaround is known. Apply the update.
Exploitation
- No known exploitation in the wild reported at the time of research.
- No public proof of concept found.
- CISA SSVC: exploitation none, automatable no, technical impact total.
- Chromium rates the bug Low severity; the CVSS base score is 8.8.
Our recommendation
- Check Chrome and Edge versions on all endpoints and update to the fixed builds.
- Restart browsers after the update so the new version is running.
- Enforce updates via endpoint management or browser policies, and report non-compliant devices.
- Monitor for reports of exploitation and patch within the normal cycle.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Chrome Releases: Stable Channel Update for Desktop chromereleases.googleblog.com
- Chromium issue tracker issues.chromium.org
- Microsoft Security Update Guide: CVE-2026-113103 msrc.microsoft.com
- NVD mirror on Vulners: CVE-2026-113103 vulners.com
- Hong Kong CERT: Microsoft Edge multiple vulnerabilities www.hkcert.org
- TechGeeks: Google Chrome 156 stable security notice www.techgeeks.org
- Cybersecurity News: Chrome security update fixing 353 flaws cybersecuritynews.com
- Strix: CVE-2026-113103 www.strix.ai
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 13:57.
Original description (NVD)
Use after free in WebProtect in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Low)
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
Affected? We can help.
We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.