Google Chrome: Use-after-free in HTML handling allows sandbox code execution
Summary
A use-after-free vulnerability (CWE-416) in HTML handling in Google Chrome before 155.0.8059.39 allows a remote attacker to execute arbitrary code inside the browser sandbox. The attacker must lure a user to a crafted HTML page; no authentication is required. A full compromise usually needs an additional sandbox escape, which is not described in the CVE record. Chromium rates the issue High.
Affected
- Google Chrome prior to 155.0.8059.39 (Windows, macOS, Linux)
- Chromium-based browsers and Linux distribution packages without this fix
Fixed in
- Google Chrome 155.0.8059.39 (Linux); Windows and macOS: 155.0.8059.39 or .40 (exact build unverified)
- Debian chromium 155.0.8059.39-1~deb12u1 (bookworm)
- SUSE chromium 155.0.8059.39
Workaround
Unknown. No vendor workaround is known; the fix is a browser update.
Exploitation
- No known exploitation in the wild reported by CIS or CISA ADP Vulnrichment; not confirmed in the CISA KEV catalog.
- No public proof of concept found. The vendor often withholds technical details until most users have updated.
Our recommendation
- Update Chrome and other Chromium-based browsers to 155.0.8059.39 or later; for Edge and Linux packages, follow the vendor advisories.
- Restart the browser after the update, because the auto-update is staged.
- Check versions via endpoint inventory and look for stragglers in managed fleets.
- Prioritise this update for workstations with internet access.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Google Chrome Releases: Stable Channel Update for Desktop chromereleases.googleblog.com
- Chromium issue tracker issues.chromium.org
- CIS Advisory: Multiple vulnerabilities in Google Chrome www.cisecurity.org
- OSV: DEBIAN-CVE-2026-106257 osv.dev
- SUSE CVE entry via Vulners vulners.com
- Vulners MS:CVE-2026-106257 vulners.com
- OpenCVE: CVE-2026-106257 app.opencve.io
- CISA ADP Vulnrichment (HOL Guard) 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, 22:05.
Original description (NVD)
Use after free in HTML 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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