CVE-2026-24423

SmarterTools SmarterMail contains a missing authentication for critical function vulnerability in the ConnectToHub API method. This could allow the attacker to point the SmarterMail instance to a malicious HTTP server which serves the malicious OS command and could lead to command execution.

• https://code-white.com/public-vulnerability-list/#systemadminsettingscontrollerconnecttohub-missing-authentication-in-smartermailThird Party Advisory
• https://www.smartertools.com/smartermail/release-notes/currentRelease Notes
• https://www.vulncheck.com/advisories/smartertools-smartermail-unauthenticated-rce-via-connecttohub-apiThird Party Advisory
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-24423US Government Resource