CVE Watch27 ago 2026

CVE-2026-55182

LibreNMS is a network monitoring system. In versions from 21.6.0 up to 26.5.0, the Signal alert transport is vulnerable to command injection

CVSS

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Sin CVSS

EPSS

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KEV

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Exploit Today

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0-100

Publicado: 26 ago 2026 · Última mod.: 27 ago 2026 · CWE-77

EPSS · 30d

Sin historial EPSS suficiente todavía.

Descripción técnica

LibreNMS is a network monitoring system. In versions from 21.6.0 up to 26.5.0, the Signal alert transport is vulnerable to command injection because the signal-cli path and the Recipient field of an alert transport entry are insufficiently escaped before being passed to an exec call. An authenticated administrator can craft a transport entry whose Recipient contains shell metacharacters and whose path points to the bundled composer_wrapper.php script, which itself passes attacker-controlled input to further unsafe exec calls. By chaining these calls, the administrator can execute arbitrary operating-system commands on the LibreNMS host. This issue is fixed in version 26.5.0.

Referencias oficiales

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