Google Chrome for iOS: Use-after-free allows sandbox code execution
Summary
Google Chrome for iOS before 156.0.8078.47 contains a use-after-free memory flaw (CWE-416) that can be triggered by a crafted HTML page. A remote attacker may potentially execute arbitrary code inside the browser sandbox. The victim must open the malicious page, and no authentication is needed. Google rates the issue Low, the CVSS score of 8.8 is an NVD/CNA score, and no exploitation is known.
Affected
- Chrome for iOS (iPhone and iPad) prior to 156.0.8078.47
- The version range in the CVE record is inconsistent ("156.0.8078.47 to < 156.0.8078.47").
Fixed in
- Chrome for iOS 156.0.8078.47 or later, according to the CVE description.
- Unverified: Wikipedia lists 156.0.8078.54 (23 October 2026) as the iOS build. The iOS build reported at launch was 156.0.8078.46, which is below the threshold. Confirm the exact fixed build in the App Store release notes.
Workaround
- No workaround is needed if the app is updated.
- No vendor-documented workaround found. Unknown.
Exploitation
- No evidence of exploitation in the wild found. A third-party tracker lists KEV as No; not checked against the CISA KEV catalogue.
- No public proof of concept found.
- The Chromium issue tracker entry could not be accessed, so disclosure details are unknown.
Our recommendation
- Update Chrome on iPhones and iPads via the App Store and confirm the version is at least 156.0.8078.47, preferably the latest build.
- On managed devices (MDM), enforce App Store auto-updates for Chrome.
- Monitor the Google Chrome Releases blog and the Chromium issue for changes to severity or exploitation status.
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
- Vulners: CVE-2026-113323 (CVE list) vulners.com
- Strix: CVE-2026-113323 www.strix.ai
- Google Chrome Help: Chrome on iOS requirements support.google.com
- Wikipedia: Google Chrome en.wikipedia.org
- TechSpot: Chrome for iOS downloads www.techspot.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, 11:58.
Original description (NVD)
Use after free in Chrome for iOS in Google Chrome on on iOS 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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