{"schemaVersion":3,"id":"CVE-2026-91085","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Apache Karaf's shell/SSH command security is enforced by per-scope ACL configuration files (etc/org.apache.karaf.command.acl.<scope>.cfg). SecuredSessionFactoryImpl.checkSecurity() resolves the roles required for an invocation and, when no ACL rule matches the command, fails open: ACLConfigurationParser.Specificity.NO_MATCH sets passCheck = true. The safety valve for this, karaf.secured.command.compulsory.roles, ships commented out in etc/system.properties, so an unmatched command is allowed for any authenticated user.\n\n\nThe shipped org.apache.karaf.command.acl.config ACL (assemblies/features/standard/src/main/feature/feature.xml, mirrored into instance/.../etc/org.apache.karaf.command.acl.config.cfg) has no install entry. It restricts delete to admin, restricts edit/property-*/update on the jmx.acl.*, org.apache.karaf.command.acl.* and org.apache.karaf.service.acl.* PIDs to admin, and allows manager for everything else, but config:install was simply unmatched, and therefore allowed for any authenticated user, including one holding only the viewer role.\n\n\n\n\nconfig:install <url> <finalname> fetches url and writes it into ${karaf.etc} as finalname. It calls PathUtils.checkWithin() to block .. traversal outside karaf.etc, but that folder holds every security-relevant file Karaf ships: users.properties, keys.properties, host.key, and all org.apache.karaf.*.acl.* files, including the very ACL file that (mis)governs this command. With -o/--override, an existing file is overwritten with attacker-controlled bytes fetched from an arbitrary URL.\n\n\n\n\nBecause felix.fileinstall.dir = ${karaf.etc} (etc/config.properties), Felix FileInstall also watches and reloads any .cfg file dropped there, closing the loop without requiring a restart.\n\n\n\n\nBy contrast, bundle:install, feature:install and kar:install are all admin-only in their own ACLs, and config:delete is admin in this same ACL, config:install was the outlier.\n\nMitigationAdd install = admin in etc/org.apache.karaf.command.acl.config.cfg (create the file is absent), and/or set karaf.secured.command.compulsory.roles=admin in etc/system.properties (and restart) to make unmatched commands fail closed by 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Authorization","description":"The product does not perform an authorization check when an actor attempts to access a resource or perform an action.","type":"weakness","status":"Incomplete","abstraction":"Class","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/862.html"}],"affected":[{"vendor":"apache software foundation","product":"apache karaf","name":"Apache Karaf","label":"apache karaf","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 4.4.12","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.4.12","eol":null,"hubHref":"/vendor/apache_software_foundation/apache_karaf"},{"vendor":"apache","product":"karaf","name":"karaf","label":"karaf","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 4.4.12","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.4.12","eol":null,"hubHref":"/vendor/apache/karaf"}],"affectedCount":2,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://karaf.apache.org/security/cve-2026-91085.txt","label":"karaf.apache.org/security/cve-2026-91085.txt","hostname":"karaf.apache.org","tags":["Vendor Advisory","Mailing List"]},{"url":"http://www.openwall.com/lists/oss-security/2026/09/28/10","label":"www.openwall.com/lists/oss-security/2026/09/28/10","hostname":"www.openwall.com","tags":["Mailing List","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-09-29T08:39:33.209Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-01T14:18:12.957Z","label":"Last modified","detail":"Vulnerability information 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