CVE-2026-19853

CyberTutor｜NewSiteServer (NSS) - Missing Authentication

MEDIUM

5.3

CVSS Score

Published: August 24, 2026 at 03:30 AM UTC

Updated: October 12, 2026 at 04:10 PM UTC

1 product affected across 1 vendorNewsiteserver

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Severity

MEDIUM5.3

Exploit prediction

EPSS 0.5%

SSVC

No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Newsiteserver · Cybertutor

90%

All versions

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (2)

Third Party Advisory

Source: cverecord

https://www.twcert.org.tw/tw/cp-132-11117-4f503-1.html

Third Party Advisory

Source: cverecord

https://www.twcert.org.tw/en/cp-139-11121-51e56-2.html

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

5.3MEDIUMtwcert

Attack Vector: NETWORK
Complexity: LOW
Privileges: NONE
User Interaction: NONE
Scope: UNCHANGED
Confidentiality: NONE
Integrity: LOW
Availability: NONE

Vector?

Quick Info

StatusDEFERRED

CWE

CWE-306

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