Google Chrome: Use-after-free in Turbolev component
Summary
A use-after-free flaw in the Turbolev component of Google Chrome before 156.0.8078.73 allows code execution inside the Chrome sandbox. A remote attacker can exploit it by luring a user to a crafted HTML page, so user interaction is required. Code execution is limited to the sandbox on its own; a full system compromise usually requires a second flaw. The NVD status and CVSS 8.8 score should be verified because sources disagree on them.
Affected
- Google Chrome desktop, all versions prior to 156.0.8078.73 (Windows, macOS, Linux)
- Other Chromium-based browsers: check their own advisories (Microsoft Edge was still at 156.0.4314.42 on 28 October 2026 according to a third-party guide)
Fixed in
- Google Chrome 156.0.8078.73 or later (Linux)
- Google Chrome 156.0.8078.73 or .74 or later (Windows, macOS), per third-party reports of the 27 October 2026 Stable update; verify against the Chrome Releases post
- Vendor patch status: available
Workaround
- No vendor workaround known. The update is the fix.
- Until updated: limit browsing to trusted sites and limit use of the affected browser on sensitive systems (own assessment, not from a source).
Exploitation
- Not known to be exploited in the wild at the time of research.
- Not listed in CISA KEV (snapshot from about 27 to 29 October 2026).
- No public proof of concept found.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Confirm Chrome is at 156.0.8078.73 or later (or .74 on Windows and macOS) on all endpoints.
- Check Microsoft Edge and other Chromium-based browsers for their own updates.
- Use managed update policies and verify the installed version.
- Monitor for updates to the KEV catalogue and vendor advisories.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Chrome Releases: Stable Channel Update for Desktop (vendor advisory) chromereleases.googleblog.com
- Chromium bug tracker issues.chromium.org
- VulDB CVE record vuldb.com
- OffSeq threat radar radar.offseq.com
- Strix CVE summary www.strix.ai
- CVE Brief cvebrief.com
- Malwarebytes: Chrome and Firefox updates fix serious security flaws www.malwarebytes.com
- Sandbanks: Chrome security update October 2026 sandbanksdigital.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, 09:43.
Original description (NVD)
Use after free in Turbolev in Google Chrome prior to 156.0.8078.73 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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