What’s Vulnerable › Vulnerabilities

CVE-2021-40310

• Severity: medium (CVSS 5.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.8% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2021-09-24 · updated 2026-06-17
• Weakness: CWE-79

Description

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.

Affected products

• OS4ED openSIS-Classic: 8.0

References

• https://github.com/MiSERYYYYY/Vulnerability-Reports-and-Disclosures/blob/main/OpenSIS-Community-8.0.md
• https://github.com/OS4ED/openSIS-Classic
• https://www.youtube.com/watch?v=aPKPUDmmYpc
• https://github.com/MiSERYYYYY/Vulnerability-Reports-and-Disclosures/blob/main/OpenSIS-Community-8.0.md
• https://github.com/OS4ED/openSIS-Classic
• https://www.youtube.com/watch?v=aPKPUDmmYpc

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