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Vulnerability details: VCID-2gun-mcx6-akcy
Vulnerability ID VCID-2gun-mcx6-akcy
Aliases CVE-2026-6204
GHSA-pr3g-phhr-h8fh
Summary 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.
Status Published
Exploitability None
Weighted Severity None
Risk None
Affected and Fixed Packages Package Details
Weaknesses (3)
CWE-78 Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
epss 8e-05 https://api.first.org/data/v1/epss?cve=CVE-2026-6204
cvssv4 8.5 https://github.com/librenms/librenms
generic_textual HIGH https://github.com/librenms/librenms
cvssv4 8.5 https://github.com/librenms/librenms/blob/master/app/Providers/AppServiceProvider.php#L169
generic_textual HIGH https://github.com/librenms/librenms/blob/master/app/Providers/AppServiceProvider.php#L169
cvssv4 8.5 https://github.com/librenms/librenms/security/advisories/GHSA-pr3g-phhr-h8fh
generic_textual HIGH https://github.com/librenms/librenms/security/advisories/GHSA-pr3g-phhr-h8fh
ssvc Track* https://github.com/librenms/librenms/security/advisories/GHSA-pr3g-phhr-h8fh
cvssv4 8.5 https://nvd.nist.gov/vuln/detail/CVE-2026-6204
generic_textual HIGH https://nvd.nist.gov/vuln/detail/CVE-2026-6204
cvssv4 8.5 https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#binary-path-rce-poc
generic_textual HIGH https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#binary-path-rce-poc
ssvc Track* https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#binary-path-rce-poc
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-6204
https://github.com/librenms/librenms/blob/master/app/Providers/AppServiceProvider.php#L169
https://nvd.nist.gov/vuln/detail/CVE-2026-6204
#binary-path-rce-poc https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#binary-path-rce-poc
GHSA-pr3g-phhr-h8fh https://github.com/advisories/GHSA-pr3g-phhr-h8fh
GHSA-pr3g-phhr-h8fh https://github.com/librenms/librenms/security/advisories/GHSA-pr3g-phhr-h8fh
No exploits are available.
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://github.com/librenms/librenms
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

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high

none

passive

active

high

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none

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none

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low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://github.com/librenms/librenms/blob/master/app/Providers/AppServiceProvider.php#L169
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

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none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://github.com/librenms/librenms/security/advisories/GHSA-pr3g-phhr-h8fh
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

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none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2026-04-13T12:42:55Z/ Found at https://github.com/librenms/librenms/security/advisories/GHSA-pr3g-phhr-h8fh
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://nvd.nist.gov/vuln/detail/CVE-2026-6204
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

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low

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none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N Found at https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#binary-path-rce-poc
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none
Vector: SSVCv2/E:P/A:N/T:T/P:M/B:A/M:M/D:R/2026-04-13T12:42:55Z/ Found at https://projectblack.io/blog/librenms-authenticated-rce-and-xss/#binary-path-rce-poc
Exploit Prediction Scoring System (EPSS)
Percentile 0.00779
EPSS Score 8e-05
Published At June 11, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T16:47:33.378053+00:00 Vulnrichment Import https://github.com/cisagov/vulnrichment/blob/develop/2026/6xxx/CVE-2026-6204.json 38.6.0