CVE-2021-40310

OpenSIS Community Edition version 8.0 is affected by a cross-site scripting (XSS) vulnerability in the TakeAttendance.php via the cp_id_miss_attn parameter.

• CWE-79

• 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.youtube.com/watch?v=aPKPUDmmYpcExploit, Third Party Advisory
• 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.youtube.com/watch?v=aPKPUDmmYpcExploit, Third Party Advisory

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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