8.8
HighCVSS 3.1 · from CISA
CVE-2026-118331
Improper input validation in FileAPI 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.
Chrome · Improper input validation · CWE-20AffectedChrome
FixUpdate to 156.0.8078.73 or newer
PublishedOct 27, 23:03 · Chrome
Scored8.8 · CISA
Exploit code publicNone known · checked 21:18 UTC
ExploitedNone known · CISA KEV checked 22:04 UTC
What we know
No known exploitation. CISA KEV, checked 22:04 UTC.
No public exploit code known. Exploit-DB, Metasploit, Nuclei, checked 21:18 UTC.
An attacker only needs network access to the target. No login needed. CVSS: network, no privileges.
Someone has to open, click or run something first. CVSS: user interaction required.
A successful attack can read and change data and take the service down. CVSS: high impact on confidentiality, integrity and availability.
A successful attack gives full control of the affected system. CISA: technical impact total.
Description
Improper input validation in FileAPI 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: Critical)
From Chrome
Affected and fixed versions
ProductAffectedFixed inChrome156.0.8078.73 – before 156.0.8078.73156.0.8078.73
Exploit code
Exploit-DBnone knownMetasploitnone knownNucleinone known