Google Chrome: Use-after-free in Modularization component
Summary
Google Chrome before 156.0.8078.73 contains a use-after-free flaw in the Modularization component (CVSS 8.8, CWE-416). A remote attacker can execute arbitrary code inside the browser sandbox by luring a user to a crafted HTML page. No user privileges are required, but the victim must open the page, so every Chrome installation with web access is exposed.
Affected
- Google Chrome prior to 156.0.8078.73 (desktop, per NVD/CNA record)
- Ubuntu chromium-browser package: not affected (wrapper around the Chromium snap)
Fixed in
- Google Chrome 156.0.8078.73 or later, released 27 October 2026 (per CVE record and secondary reports)
- Install the newest stable build. A third-party page references 156.0.8078.79 for another Chrome CVE; whether it also covers this CVE is unknown.
Workaround
Unknown. No vendor workaround is documented. Updating is the fix.
Exploitation
- No evidence of exploitation in the wild as of the latest data found.
- Not listed in CISA KEV as of the latest tracker entry found.
- No public proof-of-concept found as of the data date.
- CISA SSVC: exploitation none, automatable no, technical impact total.
Our recommendation
- Update Google Chrome to 156.0.8078.73 or later on all endpoints, ideally the newest stable build.
- Verify the installed version on each device (chrome://settings/help) and check managed fleets for blocked or lagging updates.
- Ensure automatic updates are enabled and restart the browser after updating.
- Prioritise staff who browse untrusted links or open email attachments.
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 issues.chromium.org
- Ubuntu security tracker CVE-2026-118341 ubuntu.com
- OffSeq Radar threat entry radar.offseq.com
- GitHub CVE tracker entry (KEV status) github.com
- Malware.news: Chrome and Firefox updates fix serious security flaws malware.news
- VulDB CVE-2026-118341 vuldb.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, 09:47.
Original description (NVD)
Use after free in Modularization in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to execute arbitrary code inside 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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