{"apiVersion":"1.0","identifier":"CVE-2026-73974","description":"linuxfabrik-lib provides Python modules for database access, caching, shell execution, and API integrations, and Linuxfabrik Monitoring Plugins uses its shared testing helper across check plugins. Prior to linuxfabrik-lib 6.1.0 and Linuxfabrik Monitoring Plugins 7.0.0, lib.lftest.test() treated the first or second element of a --test CSV argument as a filesystem path and returned the file contents as simulated standard output or standard error without path confinement. The hidden but production-accessible --test argument was accepted by sudo-authorized plugins, so an attacker controlling the nagios or icinga account could use check-plugins/deb-updates/deb-updates with its default QUERY=1 to disclose every line of a root-readable file. Approximately 22 other plugins exposed filtered content or a root file existence and readability oracle through the same helper, while check-plugins/network-bonding/network-bonding and check-plugins/openstack-swift-stat/openstack-swift-stat had direct read paths that bypassed the helper. The library fix confines fixture reads to the invoking plugin-s unit-test directory and refuses unsafe anchors, and the plugin fix routes the two bypasses through that helper. These issues are fixed in linuxfabrik-lib 6.1.0 and Linuxfabrik Monitoring Plugins 7.0.0.","publishedAt":"2026-08-18T22:17:33","lastModifiedAt":"2026-08-19T17:21:01","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-73974","cvssScore":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","epssProbability":0.00139,"riskScore":0.56,"affectedProduct":"linuxfabrik-lib","affectedVersions":"<6.1.0","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-73974","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-73974","en":"https://www.redsauce.net/en/cves/CVE-2026-73974","fr":"https://www.redsauce.net/fr/cves/CVE-2026-73974","pt":"https://www.redsauce.net/pt/cves/CVE-2026-73974","de":"https://www.redsauce.net/de/cves/CVE-2026-73974","sk":"https://www.redsauce.net/sk/cves/CVE-2026-73974","el":"https://www.redsauce.net/el/cves/CVE-2026-73974"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-73974"}}