Google Chrome: Use after free in Transactions Platform allows sandboxed code execution
Summary
Google Chrome versions before 156.0.8078.47 contain a use-after-free vulnerability in the Transactions Platform component. A remote attacker can execute arbitrary code inside the browser sandbox by luring a user to a crafted HTML page. The NVD score is 8.8 (High), and the description does not claim a sandbox escape, so full system compromise would require an additional flaw.
Affected
- Google Chrome prior to 156.0.8078.47
- Desktop builds (Windows, macOS, Linux) as listed in the Chrome 156 stable channel update
- Distribution packages of Chromium: check the vendor advisories of your distribution, e.g. Debian DSA 6577-1 and DLA 4853-1 (exact package versions unverified)
- Ubuntu chromium-browser package: listed as not affected; the Chromium snap is the component to check
Fixed in
- Google Chrome 156.0.8078.47 (Linux) and 156.0.8078.47/.48 (Windows, macOS), per secondary reporting; verify against the vendor advisory
- Distribution-specific fixed versions: see the respective vendor advisories
Workaround
Unknown. A patch is available; no workaround is documented. Update and restart the browser.
Exploitation
- No evidence of in-the-wild exploitation found.
- CISA SSVC: Exploitation 'poc', Automatable 'no', Technical Impact 'total'.
- No public proof of concept found.
- A third-party market price estimate exists (USD 5,000 to 25,000); this is not evidence of a working exploit.
Our recommendation
- Update all Chrome installations to 156.0.8078.47 or later and restart the browser.
- Check the version at chrome://version on each machine.
- Enforce updates via device management or Chrome Enterprise policies; check for policies that block or delay updates.
- Prioritise machines that are offline or pinned to old versions.
- Check Chromium-based distribution packages and the Chromium snap on Linux systems.
- Monitor for unusual browser crashes or behaviour.
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
- Ubuntu CVE tracker ubuntu.com
- VulDB entry vuldb.com
- Vulners CVE listing vulners.com
- Strix CVE record www.strix.ai
- Cybersecurity News: Chrome 156 security update cybersecuritynews.com
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, 13:37.
Original description (NVD)
Use after free in Transactions Platform 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: 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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