CVE-2026-19853: Cybertutor Newsiteserver Nss

Medium severity, CVSS 5.3. EPSS: 0.3% chance of exploitation in the next 30 days.

NewSiteServer (NSS) developed by CyberTutor has a Missing Authentication vulnerability. Unauthenticated remote attackers can exploit a specific functionality to send emails to anyone on behalf of the school.

Affected products

• Cybertutor Newsiteserver Nss: any version

Published 2026-08-24. Last modified 2026-08-26.