Google Chrome: Use-after-free in Extensions component
Summary
Google Chrome before 156.0.8078.47 contains a use-after-free flaw in the Extensions component (CWE-416). A remote attacker can execute arbitrary code inside the browser sandbox by luring a user to a crafted HTML page. No account is required, but the victim must open the page. CVSS 8.8; Chromium rates the severity as Medium.
Affected
- Google Chrome for Windows, macOS and Linux prior to 156.0.8078.47
Fixed in
- 156.0.8078.47 or later (per CVE record)
- Later builds reported by secondary sources: 156.0.8078.79/.80 (Windows, Mac) and 156.0.8078.79 (Linux). Confirm against the vendor advisory before rollout.
Workaround
- No vendor workaround published. The fix is a browser update.
- Keep automatic updates enabled.
- Restrict extension installation to an approved list via Chrome policy.
- Remove unused extensions.
Exploitation
- No known exploitation in the wild and no public proof of concept found at the time of research.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Update all Chrome installations to 156.0.8078.47 or later, ideally the newest stable build, within days.
- Verify the Chrome version on every endpoint, including managed devices, via Chrome Enterprise or your RMM tool.
- Prioritise browsers on admin workstations and on systems used for web-based administration.
- Monitor for unusual browser activity.
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
- Ubuntu security: CVE-2026-113302 ubuntu.com
- Vulners: CVE-2026-113302 vulners.com
- OffSeq Radar: CVE-2026-113302 radar.offseq.com
- Ubuntu Updates: google-chrome-stable package www.ubuntuupdates.org
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, 12:07.
Original description (NVD)
Use after free in Extensions 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: 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.
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