Google Chrome: Race condition in V8 engine allows code execution in sandbox
Summary
Google Chrome versions before 155.0.8059.39 contain a race condition in the V8 JavaScript engine. A remote attacker can potentially execute arbitrary code inside the browser sandbox by luring a user to a crafted HTML page. The attack requires the victim to open that page, and according to the NVD description the impact is limited to the sandbox; escaping it would normally need a second flaw.
Affected
- Google Chrome prior to 155.0.8059.39
- Chromium-based browsers that include the affected V8 code (e.g. Microsoft Edge, depending on version)
- Linux distribution packages of Chromium with versions before the fixed build
Fixed in
- Google Chrome 155.0.8059.39 or later (Windows, Linux); 155.0.8059.39/.40 (Windows, Mac)
- Debian bookworm: 155.0.8059.39-1~deb12u1
- Edge: 155.0.4283.62 according to a Tenable plugin, not verified against Microsoft's advisory
Workaround
- Unknown. No workaround is documented; the fix is to update.
Exploitation
- No evidence of exploitation in the wild found; CISA ADP Vulnrichment does not mark it as known exploited.
- No public proof of concept found.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Update Chrome to 155.0.8059.39 or later and verify the version across the fleet.
- Check Edge and other Chromium-based applications for the fixed build.
- Force updates via About Google Chrome where the automatic rollout is delayed.
- Priority: high for browser fleets, within normal patch cycles given no known exploitation.
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
- OSV: DEBIAN-CVE-2026-106255 osv.dev
- Vulners: CHAINGUARD:CVE-2026-106255 vulners.com
- Vulners: SUSECVE:CVE-2026-106255 vulners.com
- CISA ADP Vulnrichment (mirror) hol.org
- Tenable Edge plugin 366658 www.tenable.com
- gHacks: Google releases Chrome 155 www.ghacks.net
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, 22:04.
Original description (NVD)
Race condition in V8 in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to potentially 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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