Google Chrome for Android: Type confusion in FullScreen
Summary
A type confusion flaw in the FullScreen component of Google Chrome for Android allows a remote attacker to execute arbitrary code inside the browser sandbox. The attacker only needs to lure a user to a crafted HTML page, and no authentication is required. The description does not cover a sandbox escape, so full device compromise is not described. Google rates the issue Medium severity in Chromium.
Affected
- Google Chrome for Android before 156.0.8078.47
- Desktop Chrome is a separate build and is not covered by this entry
Fixed in
- Google Chrome for Android 156.0.8078.47 (per the CVE description; the official version range in the CVE record is contradictory, so verify against the Chrome release notes)
Workaround
Unknown. No workaround found; the fix is a browser update.
Exploitation
- No evidence of in-the-wild exploitation found.
- No public proof of concept found.
- Unknown whether CISA lists the CVE in KEV; not verified.
Our recommendation
- Update Chrome on all Android devices via the Google Play Store, prioritising devices used for company email.
- Check the Chrome version on managed mobile devices (BYOD included).
- Verify the NVD status and CVSS score directly, as the sources conflict.
- Monitor for reports of in-the-wild 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 340578708 issues.chromium.org
- Ubuntu CVE-2026-113055 ubuntu.com
- Vulners CVE-2026-113055 vulners.com
- Strix CVE-2026-113055 www.strix.ai
- Wikipedia: Google Chrome en.wikipedia.org
- TrustLoud: Chrome security update October 2026 trustloud.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, 14:36.
Original description (NVD)
Type confusion in FullScreen in Google Chrome on on Android 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.
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