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Vulnerability record · CVE-2020-6637 · published 24 August 2020

CVE-2020-6637: Os4ed opensis sql injection vulnerability

Os4ed · Opensis

openSIS Community Edition version 7.3 is vulnerable to SQL injection via the USERNAME parameter of index.php.

9.8 CVSS 3.1 Critical EPSS 20% · top 2.6% CWE-89 · SQL injection
9.8CVSS 3.1 base score, v2 7.5
20%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

openSIS Community Edition version 7.3 is vulnerable to SQL injection via the USERNAME parameter of index.php.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://cinzinga.com/CVE-2020-6637/ ExploitTechnical DescriptionThird Party Advisory
https://github.com/OS4ED/openSIS-Responsive-Design/commit/1127ae0bb7c3a2883febeabc6b71ad8d73510de8 PatchThird Party Advisory
https://opensis.com/ Product
https://sourceforge.net/projects/opensis-ce/files/ Third Party Advisory
https://cinzinga.com/CVE-2020-6637/ ExploitTechnical DescriptionThird Party Advisory
https://github.com/OS4ED/openSIS-Responsive-Design/commit/1127ae0bb7c3a2883febeabc6b71ad8d73510de8 PatchThird Party Advisory
https://opensis.com/ Product
https://sourceforge.net/projects/opensis-ce/files/ Third Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-41691Os4ed opensis sql injection vulnerabilityA SQL injection vulnerability exists in OS4Ed Open Source Information System Community v8.0 via the "student_id" and "TRANSFER{SCHOOL]" parameters in…EPSS 1.9%9.8CVE-2025-22926Os4ed opensis path traversal vulnerabilityAn issue in OS4ED openSIS v8.0 through v9.1 allows attackers to execute a directory traversal by sending a crafted POST request to /Modules.php?modna…EPSS 0.90%9.8CVE-2025-22929Os4ed opensis sql injection vulnerabilityOS4ED openSIS v7.0 to v9.1 was discovered to contain a SQL injection vulnerability via the filter_id parameter at /students/StudentFilters.php.EPSS 0.52%9.8CVE-2025-22930Os4ed opensis sql injection vulnerabilityOS4ED openSIS v7.0 to v9.1 was discovered to contain a SQL injection vulnerability via the groupid parameter at /messaging/Group.php.EPSS 0.52%9.8CVE-2025-22928Os4ed opensis sql injection vulnerabilityOS4ED openSIS v7.0 to v9.1 was discovered to contain a SQL injection vulnerability via the cp_id parameter at /modules/messages/Inbox.php.EPSS 0.42%9.8CVE-2024-51211Os4ed opensis sql injection vulnerabilitySQL injection vulnerability exists in OS4ED openSIS-Classic Version 9.1, specifically in the resetuserinfo.php file. The vulnerability is due to impr…EPSS 2.3%9.8CVE-2023-38880Os4ed opensis vulnerabilityThe Community Edition version 9.0 of OS4ED's openSIS Classic has a broken access control vulnerability in the database backup functionality. Whenever…EPSS 0.96%9.8CVE-2021-41679Os4ed opensis sql injection vulnerabilityA SQL injection vulnerability exists in version 8.0 of openSIS when MySQL or MariaDB is used as the application database. An attacker can then issue …EPSS 1.3%

Source: NIST National Vulnerability Database (record CVE-2020-6637), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.