Google Chrome: Use-after-free in Extensions component
Summary
Google Chrome versions before 156.0.8078.47 contain a use-after-free flaw (CWE-416) in the Extensions component. A remote attacker can use a crafted HTML page to execute arbitrary code inside the browser sandbox, provided a user visits the page. Google rates the issue Low internally, while NVD lists a CVSS 3.1 base score of 8.8. Exploitation in the wild is not known.
Affected
- Google Chrome prior to 156.0.8078.47 (desktop)
- Android Chrome builds before 156.0.8078.47
Fixed in
- Chrome 156.0.8078.47 or later (Linux)
- Chrome 156.0.8078.47/.48 or later (Windows, Mac), per research notes
- Newer Chrome 156 stable builds also contain this fix. Install the latest stable build.
- Ubuntu: chromium-browser package is not affected; check the Chromium snap version
Workaround
- Unknown whether a vendor-specific workaround exists. None found.
- Restrict installation of untrusted browser extensions and enforce an allowlist for extensions on managed devices.
Exploitation
- No evidence of exploitation in the wild found.
- No public proof-of-concept found.
- EPSS 0.00443 (low predicted exploitation probability).
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Inventory Chrome versions on all endpoints and identify browsers below 156.0.8078.47.
- Update Chrome to the latest stable build via managed updates.
- Restart the browser after the update and confirm the running version.
- Check other Chromium-based browsers (for example Microsoft Edge) separately for their own fixed versions.
- Restrict extension installation where feasible.
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
- Ubuntu CVE tracker ubuntu.com
- Vulners CVE record vulners.com
- Strix CVE record www.strix.ai
- Cybersecurity News: Chrome security update cybersecuritynews.com
- Penligent: Chrome 156 security update www.penligent.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, 12:58.
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: 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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