Google Chrome: Use-after-free in Storage allows code execution outside sandbox
Summary
A use-after-free vulnerability (CWE-416) in the Storage component of Google Chrome before 155.0.8059.39 allows a remote attacker to execute arbitrary code outside the browser sandbox. The attacker must first have compromised the renderer process and then get a user to open a crafted HTML page. Chromium rates the issue High, and the CVSS 3.1 base score is 8.3.
Affected
- Google Chrome for desktop before 155.0.8059.39
- Chromium-based products and Linux distribution packages that have not yet received the fix
Fixed in
- Google Chrome 155.0.8059.39 or later (Stable Channel Update for Desktop, 6 October 2026)
- Install the latest stable build, as later Chrome updates also address further flaws
- Debian 155.0.8059.39-1~deb12u1 or later; SUSE chromium 155.0.8059.39 or later
Workaround
Unknown. No workaround is documented; upgrading is the only known remedy.
Exploitation
- No confirmed exploitation in the wild in the sources reviewed
- CISA SSVC: exploitation none, not automatable; not listed in CISA KEV
- A researcher reports, in a lab setting, that the bug was one stage of a multi-step chain; this is not evidence of in-the-wild use
- No public proof of concept found; EPSS is low (0.00296)
Our recommendation
- Update all Chrome installations, including Chromium-based browsers and Linux packages, to the latest stable build
- Check managed endpoints with a software inventory or update report
- Enable automatic browser updates and restart the browser after updating
- Monitor for unusual browser crashes or unexpected processes
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 559793873 issues.chromium.org
- OpenCVE: CVE-2026-106393 app.opencve.io
- OSV: DEBIAN-CVE-2026-106393 osv.dev
- Vulners: SUSECVE-2026-106393 vulners.com
- Malwarebytes: Update Chrome and ChromeOS to fix critical security issues www.malwarebytes.com
- gHacks: Google releases Chrome 155 with 247 security fixes www.ghacks.net
- HOL Guard: CVE-2026-106393 CISA ADP Vulnrichment hol.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 1 Nov 2026, 14:04.
Original description (NVD)
Use after free in Storage in Google Chrome prior to 155.0.8059.39 allowed a remote attacker who had compromised the renderer process to execute arbitrary code outside the sandbox via a crafted HTML page. (Chromium security severity: High)
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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