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CVE-2021-41691

Good to know:

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Date: June 23, 2025

A SQL injection vulnerability exists in OS4Ed Open Source Information System Community v8.0 via the "student_id" and "TRANSFER{SCHOOL]" parameters in POST request sent to /TransferredOutModal.php.

Severity Score

Related Resources (5)

https://resources.s4e.io/blog/opensis-student-information-system-0-day-vulnerability-cve-2021-41691/
https://opensis.com/
https://nvd.nist.gov/vuln/detail/CVE-2021-41691
https://github.com/OS4ED/openSIS-Classic/
https://www.mend.io/vulnerability-database/CVE-2021-41691

Severity Score

Weakness Type (CWE)

Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

CWE-89

Top Fix

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Upgrade Version

Upgrade to version https://github.com/OS4ED/openSIS-Classic.git - null

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

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