Google Chrome: Use-after-free in Chromecast allows code execution in sandbox
Summary
A use-after-free vulnerability in the Chromecast component of Google Chrome allows a remote attacker to execute arbitrary code inside the browser sandbox. The attacker needs the user to open a crafted HTML page, for example through phishing or a malicious or compromised website. The NVD assigns a CVSS 3.1 base score of 8.8 (High). No exploitation in the wild or public proof of concept is known.
Affected
- Google Chrome versions prior to 156.0.8078.47 (per the CVE description). - The CVE record's affected range is internally inconsistent and must be confirmed against the vendor advisory. - Linux distributions ship their own Chromium builds (Debian DSA 6577-1 and DLA 4853-1 are cited); Ubuntu lists its chromium-browser snap as not affected.
Fixed in
- Google Chrome 156.0.8078.47 for Linux (per secondary reports). - Google Chrome 156.0.8078.47 or .48 for Windows and macOS (per secondary reports, not yet confirmed on the vendor advisory). - Android 156.0.8078.47 (per secondary reports). Confirm exact build numbers on the Chrome Releases advisory before writing them into a patch ticket.
Workaround
Unknown. No patch-free workaround is documented in the sources reviewed. Disabling the Cast/media-router feature through Chrome Enterprise policy may reduce exposure, but this has not been verified against Google's documentation for this CVE.
Exploitation
- No known exploitation in the wild at the time of review. - No public proof of concept found. - CISA SSVC assessment: exploitation none, automatable no, technical impact total. - The CISA KEV catalog was not checked directly.
Our recommendation
- Update all Google Chrome installations to version 156.0.8078.47 or later (156.0.8078.48 on Windows and macOS, once confirmed) through your management tool. - Restart the browser after the update, because a running process may keep the old version. - Inventory Chrome versions on Windows, macOS, Linux and Android and check for anything below 156.0.8078.47. - Review whether the Cast feature is required on managed devices. - Recheck the CISA KEV catalog and the Chromium issue tracker in one to two weeks.
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
- Vulners CVE record CVE-2026-113327 vulners.com
- VulDB entry CVE-2026-113327 vuldb.com
- Cybersecurity News: Chrome 156 security update cybersecuritynews.com
- TechGeeks: Google Chrome 156 stable security notice www.techgeeks.org
- Ubuntu security tracker CVE-2026-113327 ubuntu.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, 11:51.
Original description (NVD)
Use after free in Chromecast 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: Medium)
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.