Google Chrome: Use after free in Canvas allows sandboxed code execution
Summary
A use-after-free vulnerability (CWE-416) in the Canvas component of Google Chrome before 156.0.8078.47 allows a remote attacker to execute arbitrary code inside the browser sandbox. The attacker needs a victim to open a crafted HTML page, and no privileges are required. The CVSS scope is unchanged, so the flaw alone stays inside the sandbox; a further sandbox escape would be needed for full system compromise.
Affected
- Google Chrome versions prior to 156.0.8078.47
- Chromium-based browsers that use the affected Chromium code base: vendor status varies (see Microsoft Edge and distribution notes in the sources)
Fixed in
- Google Chrome 156.0.8078.47 for Linux, Android (per secondary coverage)
- Google Chrome 156.0.8078.47 or 156.0.8078.48 for Windows and macOS (per secondary coverage)
- Microsoft Edge 156.0.4314.42 or later (per HKCERT bulletin; confirm with Microsoft)
- Linux distributions: Debian issued DSA 6577-1 and DLA 4853-1 for Chromium; fixed builds for other distributions and forks: Unknown.
Workaround
- No vendor workaround known. The fix is the browser update.
- Interim measures: restrict use to updated browsers, enforce auto-update and use browser management policies. These reduce exposure but do not fix the flaw.
Exploitation
- No known exploitation in the wild found at time of writing.
- Not listed in CISA KEV according to a third-party page (verify with CISA).
- No public proof of concept found.
- EPSS about 0.39% (30-day exploitation probability).
- CISA SSVC: Automatable: no; Technical Impact: total.
Our recommendation
- Check the Chrome version on all endpoints and update to 156.0.8078.47 or later (156.0.8078.48 or later on Windows and macOS).
- Restart browsers after updating, as a running browser keeps the old version.
- Update Edge and Linux Chromium packages, including the Chromium snap on Ubuntu.
- Prioritise workstations used for web applications and untrusted browsing.
- Verify the Chrome Releases advisory and the Chromium bug once accessible.
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 553117109 issues.chromium.org
- Ubuntu CVE-2026-113253 ubuntu.com
- Vulners CVE-2026-113253 vulners.com
- HKCERT Microsoft Edge security bulletin www.hkcert.org
- Chrome 156 security update (CybersecurityNews) cybersecuritynews.com
- Chrome 156 stable security notice (TechGeeks) www.techgeeks.org
- Strix CVE-2026-113253 www.strix.ai
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, 12:41.
Original description (NVD)
Use after free in Canvas in Google Chrome prior to 156.0.8078.47 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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