Authenticated SQL Injection in LibreNMS by LibreNMS
CVE-2020-36947

7.1HIGH

Key Information:

Vendor

Librenms

Status
Librenms
Vendor
CVE Published:
27 January 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2020-36947?

LibreNMS version 1.46 is susceptible to an authenticated SQL injection vulnerability through its MAC accounting graph endpoint. This flaw enables remote attackers to manipulate the 'sort' parameter, leveraging crafted SQL queries to extract sensitive information from the database. By performing a time-based blind SQL injection, unauthorized users can retrieve confidential database content, potentially compromising the integrity and security of the system.

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Affected Version(s)

LibreNMS 1.46

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2020-36947 - Proof of Concept

References

https://www.exploit-db.com/exploits/49246
exploit
https://www.librenms.org
product
https://github.com/librenms/librenms
product

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
High
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Hodorsec
JSON
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