Google Chrome: Memory corruption in GarbageCollection allows code execution
Summary
Google Chrome versions before 156.0.8078.79 contain a memory corruption flaw in the GarbageCollection component (CWE-119). A remote attacker can potentially execute arbitrary code outside the browser sandbox by luring a user to a crafted HTML page. The attack needs no authentication, but the victim must visit the page, and Chrome rates the issue High (the NVD score of 9.6 is not yet confirmed). Any SME workstation running an affected Chrome build is exposed.
Affected
- Google Chrome desktop builds before 156.0.8078.79 (per the CVE description)
Fixed in
- Linux: 156.0.8078.79
- Windows and macOS: 156.0.8078.79/.80 (per the Chrome Releases post of 29 October 2026)
- Android and iOS: Unknown.
- Chromium-based products such as Edge, Brave and Opera: Unknown.
Workaround
Unknown. No workaround is documented; apply the update.
Exploitation
- No evidence of exploitation in the wild on record (OffSeq Threat Radar, as of 30 October 2026).
- Not listed in CISA KEV.
- No public exploit code indexed in Metasploit or Exploit-DB.
- The vendor post excerpt did not state whether the bug is exploited in the wild.
Our recommendation
- Update Chrome to 156.0.8078.79 or later (156.0.8078.79/.80 on Windows and macOS) on all desktops, including Linux and macOS.
- Verify the version centrally on managed devices, because Chrome applies updates only after a relaunch.
- Check the browser version via Menu > Help > About Google Chrome on unmanaged devices.
- Update Edge, Brave, Opera or other Chromium-based browsers once vendors publish fixes.
- Prioritise workstations that browse untrusted or internet-facing sites.
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 575143870 issues.chromium.org
- OffSeq Threat Radar: CVE-2026-119263 radar.offseq.com
- CVE record summary (threatint) cve.threatint.com
- VulDB: CVE-2026-119263 vuldb.com
- Strix: CVE-2026-119263 www.strix.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 30 Oct 2026, 21:54.
Original description (NVD)
Memory corruption in GarbageCollection in Google Chrome prior to 156.0.8078.79 allowed a remote attacker to potentially execute arbitrary code outside 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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