Google Chrome: Improper input validation in API
Summary
Google Chrome before 156.0.8078.47 contains an improper input validation flaw in its API, rated Medium by Google. A remote attacker can use a crafted HTML page to potentially execute arbitrary code inside the browser sandbox. The victim must visit the malicious page, for example through a compromised website or a link in a phishing email. The sources do not describe a sandbox escape.
Affected
- Google Chrome prior to 156.0.8078.47, per the CVE description
- The affected version range in the CVE record is inconsistent (156.0.8078.47 to < 156.0.8078.47), so verify against the vendor advisory
- Chromium-based products that ingest the same Chromium fixes may also be affected
Fixed in
- Chrome 156.0.8078.47 (Linux) and 156.0.8078.47/.48 (Windows and macOS), per secondary coverage of the vendor's 20 Oct 2026 Stable update
- Whether 156.0.8078.73 or later covers this CVE is not confirmed; the newest Stable build is the safest choice
- Unknown: exact fixed package versions of Linux distributions
Workaround
Unknown. No workaround is documented in the sources; updating is the remedy.
Exploitation
- No evidence of exploitation in the wild was found.
- A third-party mirror lists the CVE as not in CISA KEV; this was not verified with CISA.
- No public proof-of-concept was found.
Our recommendation
- Confirm that all Chrome endpoints run 156.0.8078.47 or later, preferably the newest Stable build.
- Restart the browser after the update, because a pending update takes effect only after a relaunch.
- Include other Chromium-based browsers in the patch check.
- Deploy the update promptly within the normal browser update cycle, since the same release fixes other Critical flaws.
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
- Vulners CVE record CVE-2026-113062 vulners.com
- Strix CVE-2026-113062 www.strix.ai
- Cybersecurity News: Chrome security update fixing 353 flaws cybersecuritynews.com
- WindowsForum: Chrome 156 security update windowsforum.com
- TechGeeks: Security notice Google Chrome 156 stable www.techgeeks.org
- Ubuntu CVE tracker CVE-2026-113062 ubuntu.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, 14:32.
Original description (NVD)
Improper input validation in API in Google Chrome prior to 156.0.8078.47 allowed a remote attacker to potentially 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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