An XML External Entity (XXE) vulnerability was discovered in /api/notify.php in S-CMS 3.0 which allows attackers to read arbitrary files.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-19954
Reference (s):
- https://github.com/zhuxianjin/vuln_repo/blob/master/S-CMS%20v3.0%20XXE%20Arbitrary%20File%20Read%20Vulnerability.md