Google Chrome: Improper input validation in Views allows sandbox escape
Summary
Google Chrome on Windows contains an improper input validation flaw in its Views component (CWE-20), fixed in 156.0.8078.73. A remote attacker can use a crafted HTML page to potentially execute arbitrary code outside the browser sandbox. The attack requires a user to visit the malicious page and needs no authentication. Chromium rates the issue High, while NVD scores it 9.6 (Critical).
Affected
- Google Chrome on Windows prior to 156.0.8078.73
- Other platforms: not listed in the NVD description
Fixed in
- Google Chrome 156.0.8078.73 or .74 for Windows and Mac (Stable update of 27 October 2026)
- Google Chrome 156.0.8078.73 for Linux
- Newer Chrome 156 builds are reported; use the newest available build
- Microsoft Edge and ChromeOS: fix status not confirmed at time of writing
Workaround
- None needed; updating is the remedy.
- Interim, if patching is delayed: restrict browsing to trusted sites and use managed browser policies. No vendor-documented interim mitigation is known.
Exploitation
- Not listed in CISA KEV.
- No known exploitation in the wild as of 30 October 2026.
- No public exploit code or proof of concept known.
- CISA SSVC: exploitation none, automatable no, technical impact total.
- EPSS: 0.27 % (low).
Our recommendation
- Update Chrome on Windows and Mac to 156.0.8078.73 or newer, and on Linux to 156.0.8078.73 or newer, within the normal patch cycle; prioritise unmanaged or long-offline devices.
- Check Chrome versions across all Windows endpoints, including Microsoft Edge and other Chromium-based apps.
- Check your Linux distribution advisories, as packaging differs.
- Monitor for vendor updates and reports of exploitation.
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 issues.chromium.org
- Malwarebytes: Chrome and Firefox updates fix serious security flaws www.malwarebytes.com
- VulDB entry CVE-2026-118310 vuldb.com
- Ubuntu security CVE-2026-118310 ubuntu.com
- Vulners Red Hat CVE record CVE-2026-118310 vulners.com
- OffSeq Radar CVE-2026-118310 radar.offseq.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 30 Oct 2026, 22:04.
Original description (NVD)
Improper input validation in Views in Google Chrome on on Windows prior to 156.0.8078.73 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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