Google Chrome: Use after free in Quota component
Summary
A use-after-free vulnerability in the Quota component of Google Chrome before 156.0.8078.79 can be triggered by a crafted HTML page. A remote attacker may be able to execute arbitrary code inside the browser sandbox. The attack requires that a user visits the malicious page; no authentication is needed. Chromium rates the flaw as High severity.
Affected
- Google Chrome prior to 156.0.8078.79 (desktop)
- VulDB lists the range as up to 156.0.8078.73; other 156.x builds are affected per research notes
- Unknown whether older major versions or Extended Stable builds are covered by separate entries
Fixed in
- Google Chrome 156.0.8078.79 for Linux and Android
- Google Chrome 156.0.8078.79 or later for Windows and macOS (per third-party reports quoting the vendor release)
Workaround
- No workaround known beyond updating Chrome.
Exploitation
- No evidence of exploitation in the wild found.
- No public proof of concept found.
- Not listed in CISA KEV according to third-party trackers; verify directly in the CISA KEV catalogue.
- EPSS: 0.2 % (percentile 10).
Our recommendation
- Update Google Chrome to version 156.0.8078.79 or later on all endpoints now and verify the version in your management tooling.
- Enforce updates via MDM or Chrome Enterprise policy.
- Check that other Chromium-based browsers (for example Edge, Brave, Vivaldi) are also updated.
- The same release fixes 21 security issues; patch the whole build.
- Monitor the CISA KEV catalogue and the Chromium bug tracker for changes.
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
- VulDB entry CVE-2026-119266 vuldb.com
- OffSeq threat radar entry radar.offseq.com
- TechSpot Google Chrome download page www.techspot.com
- PiunikaWeb Chrome 156 security update piunikaweb.com
- CVE record mirror (threatint) cve.threatint.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, 08:53.
Original description (NVD)
Use after free in Quota in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to potentially 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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