Google Chrome for iOS: Use after free in web layer allows code execution in sandbox
Summary
Google Chrome for iOS contains a use-after-free vulnerability (CVE-2026-113043) in its iOSWeb component, which Google rates as Medium severity while NVD scores it 8.8 (High). A remote attacker can execute arbitrary code inside the browser sandbox by luring a user to a crafted HTML page. Exploitation requires the victim to open the page, and the attacker needs no prior access.
Affected
- Google Chrome for iOS prior to 156.0.8078.47 (per CVE description)
- Exact affected iOS build numbers are unconfirmed; sources conflict
Fixed in
- Google Chrome 156.0.8078.47 or later per CVE description
- The exact iOS build containing the fix could not be confirmed; install the newest version from the App Store
Workaround
- Unknown. No vendor-documented workaround; updating is the remedy.
Exploitation
- Exploited in the wild: No known reports.
- Public proof of concept: None found.
- CISA KEV: No entry found.
- EPSS: about 0.5% (low).
Our recommendation
- Update Google Chrome on all iPhones and iPads to the newest version in the App Store, ideally via automatic updates or MDM.
- Prioritise devices used for browsing or accessing sensitive systems.
- Remind staff not to open untrusted links or attachments.
- Monitor for vendor updates and confirm the installed version on each device.
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
- Chrome Releases: Chrome Stable for iOS update chromereleases.googleblog.com
- Chromium issue tracker issues.chromium.org
- Microsoft Security Response Center update guide msrc.microsoft.com
- Vulners CVE record vulners.com
- Strix.ai CVE record www.strix.ai
- Google Chrome on the App Store apps.apple.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, 14:42.
Original description (NVD)
Use after free in iOSWeb in Google Chrome on on iOS 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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