CVE-2020-36947Public exploitNetwork attack vectorHinoki check available

Authenticated database disclosure via graph sort injection

Published Jan 27, 2026 · Updated Jan 27, 2026

SQL injection in LibreNMS 1.46 allows remote authenticated users to read database contents through the MAC accounting graph endpoint. The graph.php endpoint incorporates the sort parameter into a database query without neutralizing SQL syntax, enabling time-based predicates to act as a blind extraction oracle. A valid LibreNMS session and access to the graph endpoint are required; successful exploitation discloses selected database values, including stored usernames and password hashes.

CVSS severity7.1
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

SQL injection in LibreNMS 1.46 allows remote authenticated users to read database contents through the MAC accounting graph endpoint. The graph.php endpoint incorporates the sort parameter into a database query without neutralizing SQL syntax, enabling time-based predicates to act as a blind extraction oracle. A valid LibreNMS session and access to the graph endpoint are required; successful exploitation discloses selected database values, including stored usernames and password hashes.

The record

CVE
CVE-2020-36947
Published
Jan 27, 2026
Updated
Jan 27, 2026
Vendor
LibreNMS
Product
LibreNMS
Classifications
CWE-89, T1190
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jan 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jan 27, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.46

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

LibreNMS · LibreNMSversion=1.46

Published CVSS scores

6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
7.1VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
7.1VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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