Google Chrome: Memory corruption in ServiceWorker allows code execution in sandbox
Summary
Google Chrome before 156.0.8078.47 contains a memory corruption flaw in ServiceWorker. A remote attacker can execute arbitrary code inside the browser sandbox by luring a user to a crafted HTML page. No authentication is required, but the user must visit the page, for example via a malicious website or phishing link.
Affected
- Google Chrome desktop builds prior to 156.0.8078.47
- Affected range per CVE record: 156.0.8078.47 to < 156.0.8078.47
- Android and iOS scope: Unknown.
Fixed in
- Chrome 156.0.8078.47 or later per CVE record. Exact fixed build per platform from the primary advisory: Unknown.
- Newer Stable and Extended Stable builds (156.0.8078.79/.80 for Windows and Mac, 156.0.8078.79 for Linux) were reported by a secondary source and should be deployed.
Workaround
- No vendor-documented workaround. Apply the update.
Exploitation
- No reports of in-the-wild exploitation found; a third-party tracker lists KEV as No (unverified against CISA KEV).
- EPSS about 0.4%.
- No public proof of concept found.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Update Chrome on all Windows, Mac and Linux systems to the latest Stable build and confirm that browsers are relaunched so the update takes effect.
- Verify versions centrally with your management tooling.
- Remind users to avoid untrusted links and websites until updated.
- Check Chromium-based packages separately, such as Debian chromium updates and the Ubuntu Chromium snap.
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 566136673 issues.chromium.org
- Ubuntu security tracker CVE-2026-113318 ubuntu.com
- Vulners NVD mirror CVE-2026-113318 vulners.com
- TechSpot Google Chrome download (update and version check) www.techspot.com
- Browserhow Chrome 156 stable update browserhow.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, 11:55.
Original description (NVD)
Memory corruption in ServiceWorker 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: 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.
Affected? We can help.
We check whether your systems are affected, install updates and close the gap – continuously with the System Health Checker if you wish.