CVE-2021-40309

A SQL injection vulnerability exists in the Take Attendance functionality of OS4Ed's OpenSIS 8.0. allows an attacker to inject their own SQL query. The cp_id_miss_attn parameter from TakeAttendance.php is vulnerable to SQL injection. An attacker can make an authenticated HTTP request as a user with access to "Take Attendance" functionality to trigger this vulnerability.

• CWE-89

• https://github.com/MiSERYYYYY/Vulnerability-Reports-and-Disclosures/blob/main/OpenSIS-Community-8.0.mdExploit, Third Party Advisory
• https://github.com/OS4ED/openSIS-ClassicProduct, Third Party Advisory
• https://www.exploit-db.com/exploits/50249Exploit, Third Party Advisory, VDB Entry
• https://github.com/MiSERYYYYY/Vulnerability-Reports-and-Disclosures/blob/main/OpenSIS-Community-8.0.mdExploit, Third Party Advisory
• https://github.com/OS4ED/openSIS-ClassicProduct, Third Party Advisory
• https://www.exploit-db.com/exploits/50249Exploit, Third Party Advisory, VDB Entry

Published

Sep 24, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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