Google Chrome: Use-after-free in FileSystem allows code execution in sandbox
Summary
Google Chrome versions before 156.0.8078.47 contain a use-after-free vulnerability (CWE-416) in the FileSystem component. A remote attacker can potentially execute arbitrary code inside the browser sandbox by luring a user to a crafted HTML page. The user must visit the page, and no authentication is required. The CVSS v3.1 base score is 8.8 (High).
Affected
- Google Chrome (desktop and Android) prior to 156.0.8078.47
Downstream: Microsoft Edge prior to 156.0.4314.42 (per HKCERT, unverified against Microsoft)
Fixed in
- Google Chrome 156.0.8078.47 or later (Linux and Android; Windows and macOS: .47 or .48 per secondary reports, unverified)
- Microsoft Edge 156.0.4314.42 or later (per HKCERT)
- Debian and FreeBSD have published Chromium fixes tracked against this CVE
- Ubuntu lists its chromium-browser package as not affected (it installs the Chromium snap, which is updated separately)
Workaround
Unknown.
Exploitation
- No evidence of exploitation in the wild found in the sources reviewed.
- Not listed as known exploited in a third-party snapshot; verify against the CISA KEV catalogue.
- CISA SSVC assessment: Exploitation none, Automatable no, Technical Impact total.
- No public proof of concept found.
Our recommendation
- Update Google Chrome on all endpoints to the newest stable build, not only 156.0.8078.47.
- Fully restart the browser after updating, because old processes may keep running after an update.
- Check the Chrome and Edge versions on all workstations and confirm that the managed update policy works.
- Monitor the CISA KEV catalogue and the vendor advisory for changes.
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 526039697 issues.chromium.org
- Vulners: CVE-2026-113097 vulners.com
- Ubuntu security: CVE-2026-113097 ubuntu.com
- HKCERT: Microsoft Edge multiple vulnerabilities www.hkcert.org
- Penligent: Chrome 156 security update www.penligent.ai
- Windows Forum: Chrome 156 security update windowsforum.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, 14:06.
Original description (NVD)
Use after free in FileSystem in Google Chrome prior to 156.0.8078.47 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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