{"answers":{"affected":"2 open source packages ship an affected version, including librenms/librenms.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55182 exists.","fix":"Upgrade librenms/librenms to 26.5.0 or later.","what":"CVE-2026-55182 is a high-severity command injection vulnerability in librenms, published on 26 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-55182 and fix it if it is affected.\n\nWhat it is: CVE-2026-55182 is a high-severity command injection vulnerability in librenms, published on 26 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55182 exists.\n\nAffected packages and fixed versions:\n- librenms/librenms (Packagist): affected from 21.6.0; fixed in 26.5.0\n- librenms/librenms (Packagist): affected from 21.6.0; fixed in 26.5.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-55182/ (Markdown: https://insights.sbomify.com/CVE-2026-55182/index.md)","id":"CVE-2026-55182","markdown":"https://insights.sbomify.com/CVE-2026-55182/index.md","name":"CVE-2026-55182","record":{"aliases":["GHSA-c9fv-cgmm-2wg7"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Network monitoring system","requires_auth":"high_privilege","summary":"An authenticated administrator can execute arbitrary OS commands on LibreNMS hosts via command injection in the Signal alert transport module.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":8.6,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-77","name":"Improper Neutralization of Special Elements used in a Command"}],"description":"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.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"LibreNMS: Remote Code Execution by Signal Alert Transportation Module","id":"CVE-2026-55182","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"command_injection","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"RClone Manager: Unauthenticated RClone Daemon Enables Remote Attack via Malicious Web Page","id":"CVE-2026-55183"},"packages":[{"ecosystem":"Packagist","fixed":["26.5.0"],"introduced":["21.6.0"],"last_affected":[],"package":"librenms/librenms","purl":null,"source":"GHSA-c9fv-cgmm-2wg7"},{"ecosystem":"Packagist","fixed":["26.5.0"],"introduced":["21.6.0"],"last_affected":[],"package":"librenms/librenms","purl":"pkg:composer/librenms/librenms","source":"GHSA-c9fv-cgmm-2wg7"}],"prev":{"headline":"Tugtainer: OIDC login remains accessible when OIDC_ENABLED is false","id":"CVE-2026-55181"},"products":["librenms"],"published":"2026-08-26","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-08-27","vendors":["librenms"]},"summary":"An authenticated administrator can execute arbitrary OS commands on LibreNMS hosts via command injection in the Signal alert transport module.","url":"https://insights.sbomify.com/CVE-2026-55182/"}