Google Chrome: Memory corruption in WebFonts allows sandboxed code execution
Summary
Google Chrome versions prior to 156.0.8078.47 contain a memory corruption flaw in the WebFonts component. A remote attacker can create a crafted HTML page that may lead to arbitrary code execution inside the browser sandbox. The user must open the malicious page, and no authentication is required.
Affected
- Google Chrome prior to 156.0.8078.47 (Desktop, per the CVE description)
- Build numbers differ by platform; VulDB describes the range as up to 155.0.8059.84
Fixed in
- Google Chrome 156.0.8078.47 or later (Windows, macOS and Linux; the vendor release of October 20, 2026)
- Use the current stable build, as later builds exist
- Debian has issued chromium updates; Ubuntu's chromium-browser package is a snap wrapper and must be checked separately
Workaround
Unknown.
Exploitation
- No evidence of exploitation in the wild found; not listed in CISA KEV according to a GitHub alert (CISA catalog not checked directly)
- No public proof of concept or exploit according to VulDB
- Chromium rates the bug Low; NVD scores it 8.8
Our recommendation
- Update Google Chrome on all endpoints to the current stable build and verify the version centrally
- Prioritise unmanaged laptops and rarely restarted machines, as Chrome applies updates only after a relaunch
- Check Ubuntu systems for the Chromium snap version
- Monitor for reports of exploitation and patch promptly if they appear
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
- VulDB CVE-2026-113027 vuldb.com
- Vulners CVE record vulners.com
- Ubuntu security tracker ubuntu.com
- GitHub alert CVE-2026-113027 github.com
- Browserhow Chrome 156 update browserhow.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, 14:52.
Original description (NVD)
Memory corruption in WebFonts 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: Low)
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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