CVE-2026-19853CWE-306

CVE-2026-19853

Medium · published August 24, 2026

CVSS v3.1
5.3
EPSS
0%
Percentile
25.6
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CVSS v4.0
6.9 · 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
EPSS
0.00335 · 25.6th percentile
Weakness
CWE-306 · Missing Authentication for Critical Function
Published
2026-08-24T08:16Z
References (2)
https://www.twcert.org.tw/en/cp-139-11121-51e56-2.html · [email protected]https://www.twcert.org.tw/tw/cp-132-11117-4f503-1.html · [email protected]
EPSS history
Timeline
  • 24 AUG 03:30Z
    CyberTutor｜NewSiteServer (NSS) - Missing Authentication
    cvelistv5