CVE-2026-113264 — CHROME
HIGHCVE-2026-113264 is a high-severity (CVSS 8.8) Improper Input Validation vulnerability in google chrome. A fix is available — see the affected versions and patch details below.
Improper input validation in Extensions 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…
EPSS Exploitation Probability
Probability of exploitation in the next 30 days, from FIRST.org EPSS.
How urgent is this, really
CVE-2026-113264 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.
Where this sits among everything scored
Of 394,415 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.
Description
Improper input validation in Extensions 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)
Affected Products
chromegoogleDetection & mitigation playbook
Vendor / applianceDetect
Inventory every google chrome deployment and check each version against the affected-products list above.
Fix
Apply the google chrome security patch or hotfix for CVE-2026-113264 on the affected version, following the vendor advisory for your exact build.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands. Alongside that, restrict the management interface to trusted networks and apply the vendor's recommended configuration mitigations.
Frequently Asked Questions
Is CVE-2026-113264 being exploited in your environment?
Detect and block the exploit chain at execution, on systems you cannot patch yet.