Google Chrome: Improper input validation in PrintPreview
Summary
Google Chrome versions before 156.0.8078.47 contain an improper input validation flaw in the PrintPreview component. A remote attacker can use a crafted HTML page to potentially execute arbitrary code outside the Chrome sandbox. The attack requires a user to open the malicious page, for example through phishing or a compromised website. Chromium rates the flaw Medium, while NVD scores it 9.6 (Critical).
Affected
- Google Chrome prior to 156.0.8078.47 (per the CVE description)
- The official CVE record lists the range as "156.0.8078.47 to < 156.0.8078.47", which is inconsistent; verify against the vendor release post
Fixed in
- Google Chrome 156.0.8078.47 (Linux and Android, per sources)
- Windows and macOS build: sources differ (156.0.8078.47 or 156.0.8078.48); check the Chrome Releases post
- Later stable builds exist; deploy the latest stable release. Whether later builds contain this fix is not verified.
- Chromium-based distribution packages (Debian, Ubuntu) differ between sources; check the vendor advisories of your distribution
Workaround
Unknown. No vendor workaround was found. The fix is the browser update, and Chrome must be restarted to apply it.
Exploitation
- Not listed in CISA KEV, according to a third-party tracker
- CISA SSVC: exploitation none, automatable no, technical impact total
- No public exploitation reported; no public proof of concept found, but the search was not exhaustive
Our recommendation
- Check the installed Chrome version on all endpoints and update to the latest stable build
- Restart Chrome after the update so the fix takes effect
- Check Chromium-based embedded or pinned browsers and packages separately
- Prioritise endpoints that lag behind or are managed inconsistently
- Monitor the Chrome Releases post and NVD for updates
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 Security Update Guide msrc.microsoft.com
- Vulners CVE entry vulners.com
- Ubuntu CVE tracker ubuntu.com
- Cybersecurity News: Chrome security update cybersecuritynews.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, 22:36.
Original description (NVD)
Improper input validation in PrintPreview in Google Chrome prior to 156.0.8078.47 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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