Google Chrome: Memory corruption in Compositing
Summary
Memory corruption in the Compositing component of Google Chrome before 156.0.8078.47 allows a remote attacker to execute arbitrary code inside the browser sandbox. The attack requires the victim to open a crafted HTML page, for example on a malicious or compromised website. Google rates the Chromium security severity as Medium; the CVSS base score of 8.8 could not be verified against NVD. No exploitation in the wild is known.
Affected
- Google Chrome prior to 156.0.8078.47
- Other Chromium-based browsers that include the affected code, prior to their fixed versions (exact vendor builds unverified)
Fixed in
- Google Chrome 156.0.8078.47 or later (Chrome 156 stable, released 20 October 2026; the exact build listed by Google for this CVE was not verified)
- Microsoft Edge 156.0.4314.42 or later (per HKCERT bulletin, not checked against the MSRC entry)
Workaround
Unknown. No workaround was found; updating is the remedy.
Exploitation
- No evidence of in-the-wild exploitation or a public proof of concept was found
- CISA SSVC assessment: exploitation none, not automatable, total technical impact
- One aggregator lists the CVE as not in CISA KEV
Our recommendation
- Check the Chrome version on all managed endpoints and confirm it is 156.0.8078.47 or later (and Edge 156.0.4314.42 or later, if used)
- Restart browsers after the update, as running sessions keep the old code
- Keep automatic browser updates enabled and verify they are applied
- Limit browsing to trusted sites where possible and monitor for unusual browser activity
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 (not accessed) issues.chromium.org
- CVE description (vulners) vulners.com
- Ubuntu security tracker ubuntu.com
- HKCERT security bulletin (Microsoft Edge) www.hkcert.org
- Strix CVE record (aggregator) www.strix.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, 14:25.
Original description (NVD)
Memory corruption in Compositing 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: 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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