Google Chrome: Use after free in Extensions allows sandboxed code execution
Summary
A use-after-free flaw in the Extensions component of Google Chrome allows a remote attacker to potentially execute arbitrary code inside the browser sandbox. The attack requires that a victim visits a crafted HTML page. Sandbox-only execution does not by itself give full control of the system, and the sources do not describe a sandbox escape.
Affected
- Google Chrome desktop prior to 156.0.8078.47
- Linux: fixed in 156.0.8078.47
- Windows and macOS: fixed in 156.0.8078.47 or 156.0.8078.48 (sources differ)
- Android and iOS: Unknown.
Fixed in
- Google Chrome 156.0.8078.47 (Linux)
- Google Chrome 156.0.8078.47 or 156.0.8078.48 (Windows, macOS)
- Debian has published updates (DSA 6577-1, DLA 4853-1). Ubuntu chromium-browser is not affected; updates come via snap.
- Microsoft Edge fixed build: Unknown.
Workaround
- No vendor workaround known.
- Fully restart the browser after updating so that the new version is active.
Exploitation
- Exploited in the wild: no evidence found.
- Public proof of concept: none found; this does not prove that none exists.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Confirm that managed Chrome installations run 156.0.8078.47 or later (156.0.8078.48 on Windows and macOS).
- Enforce browser restarts after updates.
- Update Chromium-based browsers such as Microsoft Edge and Linux packages as well.
- Monitor for exploitation reports and apply further updates promptly.
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 517094892 issues.chromium.org
- Microsoft MSRC update guide msrc.microsoft.com
- Ubuntu security CVE-2026-113262 ubuntu.com
- Vulners CVE-2026-113262 vulners.com
- VulDB 424518 vuldb.com
- TechGeeks security notice Chrome 156 www.techgeeks.org
- Penligent Chrome 156 security update www.penligent.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, 12:36.
Original description (NVD)
Use after free in Extensions in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
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.
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