Google Chrome: Use-after-free in Paint allows code execution in sandbox
Summary
A use-after-free vulnerability (CWE-416) in the Paint component of Google Chrome allows a remote attacker to execute arbitrary code inside the browser sandbox. The attacker needs the user to load a crafted HTML page, for example via a link or a malicious website, and no authentication is required. Full compromise of the device would normally also require a sandbox escape, for which no evidence was found.
Affected
- Google Chrome prior to 156.0.8078.47 (Windows, macOS, Linux)
- Microsoft Edge (Chromium-based) prior to 156.0.4314.42 (secondary source: HKCERT)
Fixed in
- Google Chrome 156.0.8078.47 or later. Build numbers differ by platform (156.0.8078.47 or 156.0.8078.48 in secondary sources).
- Later stable Chrome 156 builds exist; the latest stable build is recommended.
- Microsoft Edge 156.0.4314.42 or later (secondary source).
Workaround
Unknown. No vendor workaround is documented. Restricting browsing to trusted sites reduces exposure until the update is applied, but this is not a vendor recommendation.
Exploitation
- No evidence of exploitation in the wild in the sources checked (Strix snapshot from 20 October 2026: not listed in KEV).
- No public proof of concept found.
- Re-check the CISA KEV catalogue in the coming days.
Our recommendation
- Inventory Chrome and Edge versions on all endpoints, including Linux and macOS.
- Update Chrome to the latest stable build and Edge to 156.0.4314.42 or later as a priority.
- Verify that auto-update is enabled and that devices which were offline or unmanaged are updated.
- Monitor the CISA KEV catalogue and Google release notes for reports of exploitation.
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 entry issues.chromium.org
- HKCERT security bulletin: Microsoft Edge multiple vulnerabilities www.hkcert.org
- Chrome Releases: Stable Channel Update for ChromeOS chromereleases.googleblog.com
- Vulners: CVE-2026-113179 (CVELIST) vulners.com
- Ubuntu security: CVE-2026-113179 ubuntu.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, 13:18.
Original description (NVD)
Use after free in Paint 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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