Google Chrome: Memory corruption in Canvas allows code execution outside sandbox
Summary
A memory corruption flaw in the Canvas component of Google Chrome before 156.0.8078.47 can be triggered by a crafted HTML page. A remote attacker could potentially execute arbitrary code outside the Chrome sandbox. The attack requires that a user opens the malicious page; CISA SSVC rates exploitation as none and automatable as no.
Affected
- Google Chrome desktop builds before 156.0.8078.47 (per CVE record).
- Chrome on Linux and Android, and Chrome on Windows and macOS, as listed in the vendor and secondary sources.
Fixed in
- Chrome 156.0.8078.47 (Linux, Android); sources disagree on Windows and macOS (156.0.8078.47 or 156.0.8078.48).
- Newer stable build 156.0.8078.79 was published around 29 Oct 2026 and should be deployed.
Workaround
Unknown. No workaround is documented in the sources; apply the update.
Exploitation
- No exploitation is confirmed in the sources.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Update Google Chrome to the newest stable build on all desktop and Android devices.
- Check Chromium-based browsers such as Microsoft Edge for updates.
- Ensure Linux systems receive the Chromium update via the distribution (Ubuntu uses a snap refresh).
- Prioritise this update because of the critical CVSS score and sandbox-escape wording.
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
- Microsoft MSRC update guide entry msrc.microsoft.com
- Ubuntu security tracker ubuntu.com
- Security notice: Google Chrome 156 stable, October 2026 www.techgeeks.org
- Vulners CVE record (CVELIST) vulners.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 30 Oct 2026, 22:43.
Original description (NVD)
Memory corruption in Canvas in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: Medium)
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.
Affected? We can help.
We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.