Google Chrome: Improper input validation in SVG handling
Summary
Google Chrome before 156.0.8078.73 contains an improper input validation flaw (CWE-20) in its SVG handling. A remote attacker can use a crafted HTML page to potentially execute arbitrary code inside the browser sandbox. The victim must open the malicious page, and Chromium rates the flaw High. The CVE record does not describe a sandbox escape, which full compromise usually requires.
Affected
- Google Chrome desktop versions prior to 156.0.8078.73
- Other Chromium-based browsers: Unknown, depending on their vendor's update
Fixed in
- Google Chrome 156.0.8078.73 or later (Windows and Mac: 156.0.8078.73/.74; Linux: 156.0.8078.73)
- Later builds (156.0.8078.79 or .80) are reported by secondary sources only and are not confirmed by the vendor advisory.
- Microsoft Edge: fixed build unknown
- ChromeOS: Unknown
Workaround
Unknown. No workaround found; apply the browser update.
Exploitation
- No evidence of exploitation in the wild found.
- CISA ADP (via Vulnrichment): exploitation none, automatable no, technical impact total.
- Not listed in CISA KEV according to a third-party tracker.
- No public proof of concept found.
- Chromium keeps bug details restricted until most users have updated.
Our recommendation
- Update Chrome to 156.0.8078.73 or later on all desktop systems and verify that no managed endpoint stays below this version.
- Update other Chromium-based browsers, such as Microsoft Edge, as soon as their fixed builds are available.
- Restrict browsing to trusted sites where possible and instruct users not to open unknown links or files.
- Monitor for further Chrome security 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
- Ubuntu CVE-2026-118304 ubuntu.com
- OpenCVE CVE-2026-118304 app.opencve.io
- Malwarebytes: Chrome and Firefox updates fix serious security flaws www.malwarebytes.com
- VulDB 427596 vuldb.com
- PiunikaWeb: Google Chrome 156 security update piunikaweb.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, 10:06.
Original description (NVD)
Improper input validation in SVG in Google Chrome prior to 156.0.8078.73 allowed a remote attacker to potentially 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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