{"id":"CVE-2026-91012","state":"PUBLISHED","title":"Apache Karaf: Path Traversal in Config Service Allows Manager-to-Admin Privilege Escalation","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 all.","publishedAt":"2026-09-29T08:34:11.409Z","updatedAt":"2026-10-01T14:10:47.838Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CISA-ADP"},"assigner":"apache","products":["Apache Software Foundation Apache Karaf"],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Karaf","packageName":"org.apache.karaf.config.core.impl","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.4.12","versionType":"semver"}]}],"references":["https://lists.apache.org/thread/op8trtz1qxkdwj2rjozhd9yt2yd6nhw4","http://www.openwall.com/lists/oss-security/2026/09/28/8"],"weaknesses":["CWE-22"],"ingestedAt":"2026-10-29T20:13:34.582Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/91xxx/CVE-2026-91012.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-91012","state":"PUBLISHED","datePublished":"2026-09-29T08:34:11.409Z","dateUpdated":"2026-10-01T14:10:47.838Z","assignerShortName":"apache","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateReserved":"2026-09-14T16:27:00.736Z"},"containers":{"cna":{"title":"Apache Karaf: Path Traversal in Config Service Allows Manager-to-Admin Privilege Escalation","descriptions":[{"lang":"en","value":"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 all."}],"affected":[{"vendor":"Apache Software Foundation","product":"Apache Karaf","packageName":"org.apache.karaf.config.core.impl","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThan":"4.4.12","versionType":"semver"}]}],"references":[{"url":"https://lists.apache.org/thread/op8trtz1qxkdwj2rjozhd9yt2yd6nhw4","tags":["vendor-advisory"]}],"metrics":[{"other":{"type":"Textual description of severity","content":{"text":"important"}},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"providerMetadata":{"shortName":"apache","orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","dateUpdated":"2026-09-29T08:34:11.409Z"},"source":{"discovery":"EXTERNAL"},"credits":[{"lang":"en","value":"n0mi1k <nomilksec@gmail.com>","type":"reporter"}],"x_generator":{"engine":"Vulnogram 1.0.3"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/09/28/8"}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2026-09-29T09:15:41.656Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.8,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","integrityImpact":"HIGH","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-01T14:10:12.183455Z","id":"CVE-2026-91012","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","type":"CWE","lang":"en","description":"CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-01T14:10:47.838Z"}}]}}}