CVE-2026-6204 | LibreNMS up to 26.2.x Netcommand Feature os command injection (GHSA-pr3g-phhr-h8fh)

VDB-357126 · CVE-2026-6204 · GHSA-PR3G-PHHR-H8FH LIBRENMS UP TO 26.2.X NETCOMMAND FEATURE OS COMMAND INJECTION HISTORYDIFFRELATEJSONXMLCTI CVSS Meta Temp Score Current Exploit Price (≈) CTI Interest Score 4.5 $0-$5k 0.59+ Summaryinfo A vulnerability classified as critical was found in LibreNMS up to 26.2.x. Affected by this vulnerability is an unknown functionality of the component Netcommand Feature. The manipulation results in os command injection. This vulnerability is identified as CVE-2026-6204. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised. Detailsinfo A vulnerability was found in LibreNMS up to 26.2.x. It has been classified as critical. Affected is an unknown function of the component Netcommand Feature. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes: LibreNMS versions before 26.3.0 are affected by an authenticated remote code execution vulnerability by abusing the Binary Locations config and the Netcommand feature. Successful exploitation requires administrative privileges. Exploitation could result in compromise of the underlying web server. The advisory is available at github.com. This vulnerability is traded as CVE-2026-6204 since 04/13/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation needs additional levels of successful authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1202 by the MITRE ATT&CK project. Upgrading to version 26.3.0 eliminates this vulnerability. Productinfo Name LibreNMS Version 26.0 26.1 26.2 License open-source Website Product: https://github.com/librenms/librenms/ CPE 2.3info 🔒 🔒 🔒 CPE 2.2info 🔒 🔒 🔒 CVSSv4info VulDB Vector: 🔒 VulDB Reliability: 🔍 CNA CVSS-B Score: 🔒 CNA CVSS-BT Score: 🔒 CNA Vector: 🔒 CVSSv3info VulDB Meta Base Score: 4.7 VulDB Meta Temp Score: 4.5 VulDB Base Score: 4.7 VulDB Temp Score: 4.5 VulDB Vector: 🔒 VulDB Reliability: 🔍 CVSSv2info Vector Complexity Authentication Confidentiality Integrity Availability Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock Unlock VulDB Base Score: 🔒 VulDB Temp Score: 🔒 VulDB Reliability: 🔍 Exploitinginfo Class: Os command injection CWE: CWE-78 / CWE-77 / CWE-74 CAPEC: 🔒 ATT&CK: 🔒 Physical: No Local: No Remote: Yes Availability: 🔒 Status: Not defined Price Prediction: 🔍 Current Price Estimation: 🔒 0-Day Unlock Unlock Unlock Unlock Today Unlock Unlock Unlock Unlock Threat Intelligenceinfo Interest: 🔍 Active Actors: 🔍 Active APT Groups: 🔍 Countermeasuresinfo Recommended: Upgrade Status: 🔍 0-Day Time: 🔒 Upgrade: LibreNMS 26.3.0 Timelineinfo 04/13/2026 Advisory disclosed 04/13/2026 +0 days CVE reserved 04/13/2026 +0 days VulDB entry created 04/13/2026 +0 days VulDB entry last update Sourcesinfo Product: github.com Advisory: GHSA-pr3g-phhr-h8fh Status: Confirmed CVE: CVE-2026-6204 (🔒) GCVE (CVE): GCVE-0-2026-6204 GCVE (VulDB): GCVE-100-357126 Entryinfo Created: 04/13/2026 13:31 Changes: 04/13/2026 13:31 (67) Complete: 🔍 Cache ID: 99:7A5:101 Discussion No comments yet. Languages: en. Please log in to comment. ◂ PreviousOverviewNext ▸