Google Chrome: Use after free in Bookmarks allows code execution
Summary
Google Chrome versions before 156.0.8078.47 contain a use-after-free vulnerability in the Bookmarks component (CWE-416). A remote attacker can use a crafted HTML page to execute arbitrary code inside the browser sandbox, which is rated CVSS 8.8 by NVD. The attack requires that a user visits the malicious page, for example through a phishing link or a compromised website. Chromium rates the issue Low severity.
Affected
- Google Chrome prior to 156.0.8078.47 (per CVE record)
- Microsoft Edge (Chromium-based) prior to 156.0.4314.42 (per HKCERT bulletin, secondary source)
- Android and iOS builds: Unknown.
Fixed in
- Google Chrome 156.0.8078.47 for Linux (secondary sources)
- Google Chrome 156.0.8078.47 or .48 for Windows and macOS (secondary sources)
- Microsoft Edge 156.0.4314.42 or later (HKCERT bulletin)
- The vendor advisory could not be verified directly; check exact builds before rollout.
Workaround
Unknown. No workaround is documented; apply the update and restart the browser.
Exploitation
- No active exploitation known at the time of research.
- Not listed in CISA KEV according to a secondary source; the live catalog was not checked.
- No public proof of concept found.
- CISA SSVC: Exploitation none, Automatable no, Technical Impact total.
Our recommendation
- Update Google Chrome and Microsoft Edge to the fixed versions on all endpoints and check the installed version, not only whether an update was offered.
- Restart browsers after updating, because old browser processes may keep running.
- Prioritize managed fleets and users who update manually.
- Reinforce user awareness against suspicious links and untrusted websites.
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
- Microsoft MSRC update guide msrc.microsoft.com
- HKCERT security bulletin (Microsoft Edge) www.hkcert.org
- Vulners CVE record vulners.com
- Ubuntu security tracker ubuntu.com
- Strix CVE record www.strix.ai
- Penligent Chrome 156 security update www.penligent.ai
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, 14:48.
Original description (NVD)
Use after free in Bookmarks 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: 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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