CVE-2020-11491

MEDIUM

zen_load_balancer 3.10.1 - Authenticated Path Traversal via Monitoring Logs

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2020-11491. PoCs published by Basim Alabdullah, Dhiraj Mishra, including Metasploit module auxiliary/scanner/http/zenload_balancer_traversal.

AI-analyzed exploit summary This Metasploit module exploits an authenticated directory traversal vulnerability in Zen Load Balancer v3.10.1 via the 'filelog' parameter in 'index.cgi', allowing arbitrary file reads. It requires valid credentials and sends a crafted GET request to retrieve sensitive files like '/etc/passwd'.

Description

Monitoring::Logs in Zen Load Balancer 3.10.1 allows remote authenticated admins to conduct absolute path traversal attacks, as demonstrated by a filelog=/etc/shadow request to index.cgi.

Exploits (1)

metasploit WORKING POC
by Basim Alabdullah, Dhiraj Mishra · rubypoc
https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/scanner/http/zenload_balancer_traversal.rb

This Metasploit module exploits an authenticated directory traversal vulnerability in Zen Load Balancer v3.10.1 via the 'filelog' parameter in 'index.cgi', allowing arbitrary file reads. It requires valid credentials and sends a crafted GET request to retrieve sensitive files like '/etc/passwd'.

Classification
Working Poc 95%
Attack Type
Info Leak
Complexity
Trivial
Reliability
Reliable
Target: Zen Load Balancer v3.10.1
Auth required
Prerequisites: Valid credentials for Zen Load Balancer · Network access to the target
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2
Core References

Scores

CVSS v3 4.9
EPSS 0.0787
EPSS Percentile 93.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

Details

CWE
CWE-22
Status published
Products (1)
zevenet/zen_load_balancer 3.10.1
Published Apr 02, 2020
Tracked Since Feb 18, 2026