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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Active

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

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

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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-139-11120-64c52-2.html cve-icon cve-icon
https://www.twcert.org.tw/tw/cp-132-11116-2c1d8-1.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 an Arbitrary File Upload vulnerability. Unauthenticated remote attackers can upload arbitrary files, including malicious HTML files, thereby achieving effects similar to cross-site scripting.
Title CyberTutor｜NewSiteServer (NSS) - Arbitrary File Upload
Weaknesses CWE-434
References
Metrics cvssV3_1

{'score': 6.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N'}

cvssV4_0

{'score': 5.1, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: twcert

Published:

Updated: 2026-08-24T03:35:01.364Z

Reserved: 2026-08-14T09:35:03.910Z

Link: CVE-2026-19852

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-08-24T04:16:57.517

Modified: 2026-08-24T04:16:57.517

Link: CVE-2026-19852

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

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

Weaknesses