Google Chrome: Use after free in Accessibility allows code execution
Summary
Google Chrome prior to 156.0.8078.47 contains a use-after-free memory corruption flaw (CWE-416) in its Accessibility component. A remote attacker can use a crafted HTML page to execute arbitrary code inside the Chrome renderer sandbox. The attack requires that a user opens the malicious page; no authentication is needed.
Affected
- Google Chrome versions prior to 156.0.8078.47
- Chromium-based builds that include the affected Accessibility component (vendor advisory to be checked for exact scope)
Fixed in
- Google Chrome 156.0.8078.47 or later (Windows and macOS builds listed at 156.0.8078.48, Linux at 156.0.8078.47)
- Current Stable channel builds (156.0.8078.79 or later for Linux, 156.0.8078.79/.80 for Windows and Mac) are recommended
- Linux distributions: check Debian DSA 6577-1 and DLA 4853-1; Ubuntu chromium-browser is a snap wrapper, so check snap refresh
Workaround
- No vendor workaround known. Applying the update is the mitigation.
Exploitation
- No evidence of exploitation in the wild found.
- CISA KEV: not verified (a third-party snapshot shows No).
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
- No public proof of concept found.
Our recommendation
- Update Google Chrome to the current Stable build on all endpoints as a priority, since the fix has been available since 20 Oct 2026.
- Enable automatic updates and enforce them through managed Chrome policies.
- Check Linux and Ubuntu Chromium installations separately (deb or snap update).
- Verify installed versions centrally and confirm the update 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 issues.chromium.org
- Vulners CVE-2026-113271 vulners.com
- Ubuntu CVE-2026-113271 ubuntu.com
- GBHackers: Google Chrome 156 fixes 353 security vulnerabilities gbhackers.com
- Strix CVE-2026-113271 www.strix.ai
- TechSpot Google Chrome download 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, 12:31.
Original description (NVD)
Use after free in Accessibility in Google Chrome 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: Critical)
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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