Google Chrome: Memory corruption in Quota allows sandboxed code execution
Summary
Google Chrome before 156.0.8078.79 contains a memory corruption flaw in the Quota component. A remote attacker can use a crafted HTML page to potentially execute arbitrary code inside the browser sandbox. The attack requires a user to visit the malicious page, and the sandbox limits the impact; full system compromise would generally need a further sandbox escape.
Affected
- Google Chrome versions prior to 156.0.8078.79
- Desktop platforms (Windows, macOS, Linux)
- Chromium-based browsers are separate products and may have different fix timing
Fixed in
- Google Chrome 156.0.8078.79 or later (Linux); 156.0.8078.79 or .80 (Windows, macOS), per the vendor's stable update notice of 29 October 2026
- Note: some third-party package sources list 156.0.8078.73, which conflicts with the vendor information
Workaround
- No workaround documented. Update Chrome and relaunch the browser.
Exploitation
- No exploitation reported; not listed in CISA KEV at the time of research.
- No public proof of concept found in the sources.
- VulDB estimates an exploit price of USD 25,000 to 100,000; this is a market estimate, not evidence of exploitation.
Our recommendation
- Verify that all Chrome installations report version 156.0.8078.79 or later.
- Confirm that browsers have been relaunched after the update.
- Enforce automatic updates; check whether Extended Stable clients receive the fix on the same schedule.
- Check managed Chromium-based browsers (Edge, Brave, Vivaldi, etc.) separately against their vendor advisories.
- Prioritise endpoints with browsing exposure; servers without browsers have low exposure.
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 bug tracker entry issues.chromium.org
- VulDB CVE-2026-119265 vuldb.com
- VulDB vulnerability 428805 vuldb.com
- OffSeq Radar threat entry radar.offseq.com
- Strix CVE-2026-119265 www.strix.ai
- Chrome for Testing googlechromelabs.github.io
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)
Memory corruption 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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