Google Chrome for Android: Use after free in SiteIsolation
Summary
A use-after-free flaw in SiteIsolation, Chrome's process isolation component, affects Chrome for Android before 156.0.8078.47. A remote attacker can use a crafted HTML page to execute arbitrary code inside the browser sandbox. The victim must open the malicious page, and no login is required. Sandbox escape is not described in the CVE record.
Affected
- Google Chrome for Android before 156.0.8078.47
Fixed in
- Google Chrome for Android 156.0.8078.47 or later (per CVE description and secondary reports; later Android builds also include the fix)
Workaround
- None known. Install the update and restart the browser.
Exploitation
- No evidence of exploitation in the wild found in the reviewed sources.
- No public proof of concept found. The Chromium issue details may be restricted.
- CVSS 8.8 (AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H). Google rates the Chromium security severity as Medium.
Our recommendation
- Check the Chrome version on managed and BYOD Android devices and confirm 156.0.8078.47 or later, ideally the current stable build.
- Enforce Chrome updates via MDM or Google Play and track devices still running older builds.
- Restart Chrome after the update and warn staff about phishing links that lead to untrusted web pages.
- Verify the version details against the Google advisory before rollout.
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
- Microsoft Security Update Guide: CVE-2026-113207 msrc.microsoft.com
- Vulners NVD record CVE-2026-113207 vulners.com
- Positive Technologies PT-2026-118904 vulners.com
- Chrome 156 security update (Windows Forum) windowsforum.com
- Google Chrome (Wikipedia) 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, 13:05.
Original description (NVD)
Use after free in SiteIsolation 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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