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Vulnerability record · CVE-2021-40651 · published 29 September 2021

CVE-2021-40651: Os4ed opensis path traversal vulnerability

Os4ed · Opensis

OS4Ed OpenSIS Community 8.0 is vulnerable to a local file inclusion vulnerability in Modules.php (modname parameter), which can disclose arbitrary file from the server's filesystem as long as the application has access to the file.

6.5 CVSS 3.1 Medium EPSS 18% · top 2.9% CWE-22 · Path traversal
6.5CVSS 3.1 base score, v2 4.0
18%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
6References, 6 tagged exploit
17 Jun 2026Last modified by NVD

Description

OS4Ed OpenSIS Community 8.0 is vulnerable to a local file inclusion vulnerability in Modules.php (modname parameter), which can disclose arbitrary file from the server's filesystem as long as the application has access to the file.

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

Affected products

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

References

LinkTags
https://github.com/MiSERYYYYY/Vulnerability-Reports-and-Disclosures/blob/main/OpenSIS-Community-8.0.md ExploitThird Party Advisory
https://www.exploit-db.com/exploits/50259 ExploitThird Party AdvisoryVDB Entry
https://youtu.be/wFwlbXANRCo ExploitThird Party Advisory
https://github.com/MiSERYYYYY/Vulnerability-Reports-and-Disclosures/blob/main/OpenSIS-Community-8.0.md ExploitThird Party Advisory
https://www.exploit-db.com/exploits/50259 ExploitThird Party AdvisoryVDB Entry
https://youtu.be/wFwlbXANRCo 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-2021-40651), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.