Opensis
CVE-2021-40651
MEDIUM
Vulnerability Assessment
| Weakness |
CWE
OWASP Top 10:2025
A01:2025 - Broken Access Control
ASVS 5.0
V5 - File Handling Path canonicalization, traversal prevention
MITRE ATT&CK
2 techniques across 2 tactics: Discovery, Collection The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 6.5 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. Public proof-of-concept exploit code is available. |
| Exploit ScenarioDerived | A remote attacker could access files and directories outside the intended path by sending crafted requests to the affected application. |
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Alert meAnalysisAI
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. Rated medium severity (CVSS 6.5), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available and no vendor patch available.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate and canonicalize file paths. Use chroot or sandboxing. Reject input containing path separators or '../' sequences.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Path Traversal (CWE-22), which allows attackers to access files and directories outside the intended path. 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. Affected products include: Os4Ed Opensis.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
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.
Threat Intelligence Overview
NVD
CVE.org
EPSS
Exploit-DB
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
Path traversal exploits occur when applications use user-controlled input to construct file system paths without proper validation.
Affected Products (CPE)NVD
Eval injection vulnerability in ajax.php in openSIS 4.5 through 5.2 allows remote attackers to execute arbitrary PHP cod
openSIS through 7.4 allows SQL Injection. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable
openSIS through 7.4 has Incorrect Access Control. Rated critical severity (CVSS 9.1), this vulnerability is remotely exp
openSIS through 7.4 allows Directory Traversal. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitab
A remote code execution vulnerability in OS4Ed Open Source Information System Community (CVSS 9.8). Critical severity wi
SQL injection vulnerabilities were discovered in Ajax.php, ForWindow.php, ForExport.php, Modules.php, functions/HackingL
SQL injection vulnerability exists in OS4ED openSIS-Classic Version 9.1, specifically in the resetuserinfo.php file. Rat
A SQL injection vulnerability exists in version 8.0 of openSIS when MySQL or MariaDB is used as the application database
A SQL injection vulnerability exists in version 8.0 of openSIS when MySQL or MariaDB is used as the application database
A SQL injection vulnerability exists in version 8.0 of openSIS when MySQL or MariaDB is used as the application database
An SQL Injection vulnerability exists in openSIS Classic 8.0 via the 1) ADDR_CONT_USRN, 2) ADDR_CONT_PSWD, 3) SECN_CONT_
An SQL Injection vulnerability exists in openSIS Community Edition version 8.0 via ForgotPassUserName.php. Rated critica