{"cve":"CVE-2021-27320","nvd":{"published":"2021-03-24T14:15:14.110","modified":"2026-06-17T03:44:39.057","status":"Modified","description":"Blind SQL injection in contactus.php in Doctor Appointment System 1.0 allows an unauthenticated attacker to insert malicious SQL queries via firstname parameter.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","score":7.5},"cwes":["CWE-89"],"references":["http://packetstormsecurity.com/files/161642/Doctor-Appointment-System-1.0-Blind-SQL-Injection.html","https://www.sourcecodester.com/php/14182/doctor-appointment-system.html","http://packetstormsecurity.com/files/161642/Doctor-Appointment-System-1.0-Blind-SQL-Injection.html","https://www.sourcecodester.com/php/14182/doctor-appointment-system.html"],"products":["doctor_appointment_system_project:doctor_appointment_system"],"source":"nvd","synced_at":"2026-10-19T21:15:50.279857260+00:00"},"epss":{"cve":"CVE-2021-27320","score":0.09299,"percentile":0.95372,"date":"2026-11-01"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}