Missing Authentication Vulnerability in NewSiteServer by CyberTutor
CVE-2026-19853

6.9MEDIUM

Key Information:

Vendor

Cybertutor

Status
Newsiteserver (nss)
Vendor
CVE Published:
24 August 2026

What is CVE-2026-19853?

NewSiteServer (NSS) developed by CyberTutor contains a vulnerability that allows unauthenticated remote attackers to exploit a specific function to send emails impersonating the school's domain. This flaw exposes the system to potential misuse, leading to unauthorized communication and possible phishing attacks. Organizations using NSS should take immediate action to mitigate this risk.

Affected Version(s)

NewSiteServer (NSS) all

References

https://www.twcert.org.tw/tw/cp-132-11117-4f503-1.html
third-party-advisory
https://www.twcert.org.tw/en/cp-139-11121-51e56-2.html
third-party-advisory

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.