Is CVE-2026-19852 being exploited?

No public exploit is currently tracked.

How severe is CVE-2026-19852?

CVE-2026-19852 has a CVSS v3 severity of MEDIUM (6.1).

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CVE-2026-19852

Description

NewSiteServer (NSS) developed by CyberTutor has an Arbitrary File Upload vulnerability. Unauthenticated remote attackers can upload arbitrary files, including malicious HTML files, thereby achieving effects similar to cross-site scripting.