Google Chrome: Use-after-free in V8 allows code execution in sandbox
Summary
A use-after-free vulnerability in the V8 JavaScript engine of Google Chrome allows a remote attacker to execute arbitrary code inside the browser sandbox. The attack requires that a user visits a crafted HTML page, for example through a link in a phishing email or a malicious website. Code execution inside the sandbox alone does not give full control of the system; a separate sandbox escape would be needed.
Affected
- Google Chrome prior to 155.0.8059.39
- Chromium-based products that ingest this fix, for example Microsoft Edge, need to be checked separately
Fixed in
- Chrome 155 Stable channel update of 6 October 2026, build 155.0.8059.39 or later (Linux)
- Windows/Mac build numbers are reported inconsistently between sources; verify against the vendor release post
Workaround
- No workaround documented. Install the fixed Chrome version.
Exploitation
- Not known to be exploited in the wild. CISA SSVC (via ADP): exploitation none, automatable no.
- No public proof of concept found.
Our recommendation
- Update Chrome to 155.0.8059.39 or later on all endpoints, and verify the installed version.
- Enforce updates centrally via Chrome Enterprise policy or your endpoint management tool.
- Check Microsoft Edge and other Chromium-based applications and components for the fixed version.
- Treat as a high-priority browser update, not an emergency.
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 entry issues.chromium.org
- OpenCVE: CVE-2026-106349 app.opencve.io
- Malwarebytes: Update Chrome and ChromeOS to fix critical security issues www.malwarebytes.com
- gHacks: Google releases Chrome 155 with 247 security fixes www.ghacks.net
- GBHackers: Chrome 155 security flaws gbhackers.com
- Vulners: MS:CVE-2026-106349 vulners.com
- HOL: CVE-2026-106349 CISA ADP Vulnrichment hol.org
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, 21:51.
Original description (NVD)
Use after free in V8 in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: High)
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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