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    CVE-2026-109354

    LibreNMS before 26.9.0 contains a path traversal vulnerability in nfsen_channel_common.inc.php that allows authenticated users to read unauthorized RRD data by injecting ../ sequences into the channel parameter. Attackers with access to one NFSen-enabled device can request graph.php with a traversed channel value to view traffic and NetFlow graphs of devices outside their authorized scope.

    Published:Oct 12, 2026
    Last Modified:Oct 13, 2026
    EPS:Oct 12, 2026
    EPSS Score:0.00275
    CVSS Score:4.3

    Affected Products

    Vendor
    Librenms
    Product
    Librenms

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-109355 (CVSS 5.3) — LibreNMS before 26.9.0 contains a stored cross-site scripting vulnerability in get_oxidized_nodes_list() that …
    CVE-2026-109353 (CVSS 7.1) — LibreNMS before 26.9.0 contains an SQL injection vulnerability that allows unprivileged users to inject SQL by…
    CVE-2026-109352 (CVSS 5.3) — LibreNMS before 26.9.0 contains a stored cross-site scripting vulnerability in includes/html/pages/device/wire…
    CVE-2026-108715 (CVSS 5.3) — LibreNMS through 26.9.1.1 contains an authorization bypass vulnerability in includes/html/graphs/smokeping/aut…
    CVE-2020-15875 (CVSS 5) — An issue was discovered in LibreNMS 1.65. A remote authenticated attacker with normal privileges can extract a…
    CVE-2026-86427 (CVSS 8.7) — LibreNMS before 26.8.0 contains an argument injection vulnerability in the graph_title parameter that allows a…
    CVE-2026-86426 (CVSS 9.2) — LibreNMS before 26.8.0 contains an authentication bypass vulnerability in the REST API that allows unauthentic…
    CVE-2026-84194 (CVSS 8.6) — LibreNMS versions >= 23.10.0 and < 26.2.0 (fixed in 26.4.0) contain an authenticated OS command injection vuln…

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High