CVE-2020-13383

HIGH

openSIS <= 7.4 - Path Traversal

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-13383. Includes Metasploit module exploits/unix/webapp/opensis_chain_exec.

AI-analyzed exploit summary This Metasploit module exploits an unauthenticated PHP code execution vulnerability in openSIS 7.4 and prior versions by chaining an incorrect access control issue, a Local File Inclusion, and a SQL injection vulnerability that leads to arbitrary PHP code execution via an unsafe use of the eval() function.

Description

openSIS through 7.4 allows Directory Traversal.

Exploits (1)

metasploit WORKING POC EXCELLENT
rubypoc
https://github.com/rapid7/metasploit-framework/blob/master/modules/exploits/unix/webapp/opensis_chain_exec.rb

This Metasploit module exploits an unauthenticated PHP code execution vulnerability in openSIS 7.4 and prior versions by chaining an incorrect access control issue, a Local File Inclusion, and a SQL injection vulnerability that leads to arbitrary PHP code execution via an unsafe use of the eval() function.

Classification
Working Poc 100%
Attack Type
Rce
Complexity
Moderate
Reliability
Reliable
Target: openSIS <= 7.4
No auth needed
Prerequisites: Network access to the target web application
devstral-2 · analyzed Apr 30, 2026 Full analysis →

References (3)

Core 3

Scores

CVSS v3 7.5
EPSS 0.6960
EPSS Percentile 99.3%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-22
Status published
Products (1)
os4ed/opensis < 7.4
Published Jul 01, 2020
Tracked Since Feb 18, 2026