Google Chrome: Improper input validation in Network
Summary
Google Chrome versions prior to 156.0.8078.47 contain an improper input validation flaw in the Network component (CWE-20). A remote attacker can use a crafted HTML page to potentially execute arbitrary code inside the browser sandbox. The victim must load the page, for example via a phishing link. Chromium rates the issue Low, and no exploitation in the wild or public proof of concept is known.
Affected
- Google Chrome prior to 156.0.8078.47
- Other Chromium-based browsers that consume the Chromium fix, for example Microsoft Edge
- Linux systems where Chromium is installed as a snap (the Ubuntu chromium-browser package only installs the snap)
Fixed in
- Chrome 156.0.8078.47 (Linux) and 156.0.8078.48 (Windows, macOS), according to secondary sources; verify on Google's advisory page
- Current Stable channel: 156.0.8078.79/.80 for Windows and Mac, according to Techspot
- Distribution advisories: Debian DSA 6577-1 and DLA 4853-1, FreeBSD f4f0bb8d-ce20-11f1-9bfa-a8a1599412c6 (not retrieved directly)
Workaround
Unknown. No vendor-documented interim workaround found. Install the fixed build instead.
Exploitation
- No evidence of exploitation in the wild; one third-party tracker lists KEV: No (snapshot of 20 October 2026)
- No public proof of concept found
- Chromium security severity: Low
- EPSS 0.00452 according to a third-party aggregator (indicative only)
Our recommendation
- Confirm that all Chrome and Chromium-based browsers run 156.0.8078.47 or later, preferably the current Stable build
- Enforce automatic updates and check browser versions via MDM or Chrome policies
- Check Linux systems that use Chromium packages or snaps
- Remind staff of the browser update policy
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 524695296 issues.chromium.org
- Vulners: NVD record CVE-2026-113306 vulners.com
- Vulners: CVELIST record CVE-2026-113306 vulners.com
- Ubuntu security tracker CVE-2026-113306 ubuntu.com
- Techspot: Google Chrome downloads www.techspot.com
- Strix: CVE-2026-113306 www.strix.ai
- Wikipedia: Google Chrome en.wikipedia.org
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, 12:10.
Original description (NVD)
Improper input validation in Network in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially execute arbitrary code inside the sandbox via a crafted HTML page. (Chromium security severity: Low)
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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