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Vulnerability record · CVE-2020-6144 · published 1 September 2020

CVE-2020-6144: Os4ed opensis code injection vulnerability

Os4ed · Opensis

A remote code execution vulnerability exists in the install functionality of OS4Ed openSIS 7.4. The username variable which is set at line 121 in install/Step5.php allows for injection of PHP code into the Data.php file that it writes. An attacker can send an HTTP request to trigger this vulnerability.

9.8 CVSS 3.1 Critical EPSS 6.2% · top 6.8% CWE-96 · CWE-96CWE-94 · Code injection
9.8CVSS 3.1 base score, v2 7.5
6.2%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

A remote code execution vulnerability exists in the install functionality of OS4Ed openSIS 7.4. The username variable which is set at line 121 in install/Step5.php allows for injection of PHP code into the Data.php file that it writes. An attacker can send an HTTP request to trigger this vulnerability.

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://talosintelligence.com/vulnerability_reports/TALOS-2020-1083 ExploitThird Party Advisory
https://talosintelligence.com/vulnerability_reports/TALOS-2020-1083 ExploitThird 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-2020-6144), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.