{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109357 exists.","fix":"No fix has been published for CVE-2026-109357 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-109357 is a critical authentication bypass vulnerability in librenms, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-109357 and fix it if it is affected.\n\nWhat it is: CVE-2026-109357 is a critical authentication bypass vulnerability in librenms, published on 12 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-109357 exists.\n\nAffected product: librenms. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-109357/ (Markdown: https://insights.sbomify.com/CVE-2026-109357/index.md)","id":"CVE-2026-109357","markdown":"https://insights.sbomify.com/CVE-2026-109357/index.md","name":"CVE-2026-109357","record":{"aliases":["GHSA-7cmx-65c5-8h8v","GHSA-rx4g-rhf6-xw5x"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["privilege_escalation","account_takeover"],"network_reachable":"yes","non_default_config":true,"product_category":"Network monitoring system","requires_auth":"none","summary":"Unauthenticated attackers can gain admin access via LDAP filter injection in LibreNMS when using specific authorization modes without REMOTE_USER forwarding.","user_interaction":"not_required","vuln_class":"auth_bypass"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulnCheck","cpe":[],"cvss":{"score":9.2,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-90","name":"Improper Neutralization of Special Elements used in an LDAP Query"}],"description":"LibreNMS before 26.9.0 contains an LDAP filter injection in ldap-authorization and ad-authorization modes because usernames are inserted unescaped into LDAP search filters and authentication only checks user existence. When REMOTE_USER is not forwarded, unauthenticated attackers can send a wildcard username via HTTP Basic Authorization (PHP_AUTH_USER) to match all users and groups and gain admin access.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":false,"headline":"LibreNMS before 26.9.0 LDAP Filter Injection Authentication Bypass via Authorization Header","id":"CVE-2026-109357","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"auth_bypass","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"Edgeless Systems Contrast 1.8.0 before 1.24.1 World-Writable Containerd Config Privilege Escalation","id":"CVE-2026-109358"},"packages":[],"prev":{"headline":"LibreNMS before 26.9.0 Missing Authorization in Port Purge via PortsController","id":"CVE-2026-109356"},"products":["librenms"],"published":"2026-10-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"2026-10-15","vendors":["librenms"]},"summary":"Unauthenticated attackers can gain admin access via LDAP filter injection in LibreNMS when using specific authorization modes without REMOTE_USER forwarding.","url":"https://insights.sbomify.com/CVE-2026-109357/"}