VulnerabilityDeferred

CVE-2026-19852

NewSiteServer (NSS) developed by CyberTutor has an Arbitrary File Upload vulnerability.

MEDIUM 5.1EPSS 0.23%

Does this matter?

Lower severity and a low EPSS score (0.23%). Track it; it rarely justifies an emergency change on its own.

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.

CVSS 4.0: 5.1 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M
EPSS: 0.23% probability · 14th percentile
CISA KEV: Not listed
Weakness: CWE-434
Source: twcert@cert.org.tw

References

https://www.twcert.org.tw/en/cp-139-11120-64c52-2.html
https://www.twcert.org.tw/tw/cp-132-11116-2c1d8-1.html

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.