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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact Low

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
CyberTutor NewSiteServer (NSS) unaffected
Version Status Constraints
all affected —

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

Contact the vendor to take remedial measures.

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.twcert.org.tw/en/cp-139-11121-51e56-2.html cve-icon cve-icon
https://www.twcert.org.tw/tw/cp-132-11117-4f503-1.html cve-icon cve-icon
History

Mon, 24 Aug 2026 04:00:00 +0000

Type Values Removed Values Added
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.
Title CyberTutor｜NewSiteServer (NSS) - Missing Authentication
Weaknesses CWE-306
References
Metrics cvssV3_1

{'score': 5.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: twcert

Published:

Updated: 2026-08-24T03:30:35.116Z

Reserved: 2026-08-14T09:35:37.124Z

Link: CVE-2026-19853

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-24T04:16:57.710

Modified: 2026-08-24T04:16:57.710

Link: CVE-2026-19853

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-24T05:30:12Z

Weaknesses