{"id":"CVE-2026-19853","title":"NewSiteServer (NSS) developed by CyberTutor has a Missing Authentication vulnerability","summary":"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.","severity":"medium","cvss":5.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-306"],"published":"2026-08-24","updated":"2026-10-12","sourceUpdated":"2026-10-12T16:10:00.220","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-19853","references":[{"url":"https://www.twcert.org.tw/en/cp-139-11121-51e56-2.html","label":"twcert@cert.org.tw"},{"url":"https://www.twcert.org.tw/tw/cp-132-11117-4f503-1.html","label":"twcert@cert.org.tw"}],"tags":["nvd"],"epss":0.00335,"epssPercentile":0.24964,"ingestedAt":"2026-10-12T16:57:59.903Z","slug":"CVE-2026-19853","body":"## Overview\n\nNewSiteServer (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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":29,"depthScoreParts":{"impact":29.2,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}