Google Chrome: Incorrect authorization in UI allows sandbox escape
Summary
Google Chrome desktop versions before 155.0.8059.39 contain an incorrect authorization flaw in the user interface (CWE-863). A remote attacker can potentially execute arbitrary code outside the browser sandbox by luring a user to a crafted HTML page. No authentication is required, but the user must open the page. NVD rates the issue CRITICAL (CVSS 9.6), while Chromium rates it Medium.
Affected
- Google Chrome desktop prior to 155.0.8059.39 (Windows, macOS and Linux)
- Linux distribution packages of Chromium, for example Debian, SUSE and Chainguard, are affected until their fixed builds are installed
Fixed in
- Google Chrome 155.0.8059.39 (Windows and macOS 155.0.8059.39/.40, Linux 155.0.8059.39), Stable channel update of 6 October 2026
- Later Stable builds also include the fix; install the current Stable release
- Debian: 155.0.8059.39-1~deb12u1
Workaround
- No vendor workaround documented. Unknown.
- Updating to a fixed build is the remedy.
Exploitation
- No evidence of exploitation in the wild found.
- No public proof of concept found.
- CISA SSVC assessment: exploitation none, not automatable, total technical impact.
Our recommendation
- Update Google Chrome to the current Stable release on all endpoints, not only on servers, and prioritise this update.
- Verify the installed Chrome version centrally, for example via endpoint management or the Chrome Enterprise channels.
- Install the Linux distribution updates for Chromium where applicable.
- Monitor for public exploit reports and for updates from Google.
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 bug 557288890 issues.chromium.org
- OSV: Debian CVE-2026-106372 osv.dev
- SUSE CVE-2026-106372 (Vulners) vulners.com
- Chrome Enterprise release channels support.google.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 30 Oct 2026, 23:13.
Original description (NVD)
Incorrect authorization in UI in Google Chrome prior to 155.0.8059.39 allowed a remote attacker to potentially execute arbitrary code outside 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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