{"schemaVersion":3,"id":"CVE-2026-91012","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"org.apache.karaf.config.core.impl.ConfigRepositoryImpl#update(pid, properties),\nwhich backs the \"config\" MBean and the config:* shell commands, derives the file\nit writes a configuration to from caller-supplied input without checking that\nthe result stays inside ${karaf.etc}:\n\n  *  if the submitted property map contains a felix.fileinstall.filename entry, that value is turned directly into a File (getCfgFileFromProperty), so it can point to any absolute path the Karaf process can write to;\n  *  otherwise the configuration PID is concatenated verbatim into the target file name (generateConfigFilename(): new File(karaf.etc, pid + \".cfg\")), so a PID containing \"..\" segments resolves outside ${karaf.etc}. createFactoryConfiguration() has the same issue via the factory PID/alias.\n\n\nBoth code paths are reachable by any caller holding the \"manager\" role under Karaf's shipped command/JMX ACL (org.apache.karaf.command.acl.conf.cfg: \"update = manager\"). Such a user can therefore write attacker-controlled content to any file the Karaf process can write, including files the same ACL otherwise reserves to \"admin\" (etc/users.properties, etc/*.acl.*.cfg, etc/org.apache.karaf.management.cfg, and similar), allowing a manager-role user to grant themselves the admin role or otherwise take over the container.\n\n\n\n\n\n\nConfigMBeanImpl.install() and the config:install shell command already guarded the equivalent risk on their own code path with a finalname.contains(\"..\") string check, but that check does not stop absolute paths or symlink-based escapes, and it was never applied to ConfigRepositoryImpl.update() / createFactoryConfiguration() at 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Limitation of a Pathname to a Restricted Directory ('Path Traversal')","description":"The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.","type":"weakness","status":"Stable","abstraction":"Base","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/22.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://lists.apache.org/thread/op8trtz1qxkdwj2rjozhd9yt2yd6nhw4","label":"lists.apache.org/thread/op8trtz1qxkdwj2rjozhd9yt2yd6nhw4","hostname":"lists.apache.org","tags":["Vendor Advisory","Mailing List"]},{"url":"http://www.openwall.com/lists/oss-security/2026/09/28/8","label":"www.openwall.com/lists/oss-security/2026/09/28/8","hostname":"www.openwall.com","tags":["Mailing List","Third Party Advisory"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-09-29T08:34:11.409Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-01T14:10:47.838Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":70,"level":"high","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-19T23:53:38.492Z","stale":false,"partial":false}}