{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-91012","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","state":"PUBLISHED","assignerShortName":"apache","dateReserved":"2026-09-14T16:27:00.736Z","datePublished":"2026-09-29T08:34:11.409Z","dateUpdated":"2026-10-01T14:10:47.838Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache","dateUpdated":"2026-09-29T08:34:11.409Z"},"title":"Apache Karaf: Path Traversal in Config Service Allows Manager-to-Admin Privilege Escalation","source":{"discovery":"EXTERNAL"},"affected":[{"vendor":"Apache Software Foundation","product":"Apache Karaf","packageName":"org.apache.karaf.config.core.impl","versions":[{"status":"affected","version":"0","lessThan":"4.4.12","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"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 ${karaf.etc}. createFactoryConfiguration() has the same issue via the factory PID/alias.\n\n\nBoth code paths are reachable by any caller holding the \"manager\" role under Karaf's shipped command/JMX ACL (org.apache.karaf.command.acl.conf.cfg: \"update = manager\"). Such a user can therefore write attacker-controlled content to any file the Karaf process can write, including files the same ACL otherwise reserves to \"admin\" (etc/users.properties, etc/*.acl.*.cfg, etc/org.apache.karaf.management.cfg, and similar), allowing a manager-role user to grant themselves the admin role or otherwise take over the container.\n\n\n\n\n\n\nConfigMBeanImpl.install() and the config:install shell command already guarded the equivalent risk on their own code path with a finalname.contains(\"..\") string check, but that check does not stop absolute paths or symlink-based escapes, and it was never applied to ConfigRepositoryImpl.update() / createFactoryConfiguration() at all.","lang":"en","supportingMedia":[{"type":"text/html","base64":false,"value":"<div><span>org.apache.karaf.config.core.impl.ConfigRepositoryImpl#update(pid, properties)</span>,\nwhich backs the \"config\" MBean and the config:* shell commands, derives the file\nit writes a configuration to from caller-supplied input without checking that\nthe result stays inside&nbsp;<code>${karaf.etc}</code>:</div><div><ul><li>if the submitted property map contains a&nbsp;<code>felix.fileinstall.filename</code>&nbsp;entry, that value is turned directly into a&nbsp;<code>File</code>&nbsp;(<code>getCfgFileFromProperty</code>), so it can point to any absolute path the Karaf process can write to;</li><li>otherwise the configuration PID is concatenated verbatim into the target file name (<code>generateConfigFilename(): new File(karaf.etc, pid + \".cfg\")</code>), so a PID containing \"..\" segments resolves outside&nbsp;<code>${karaf.etc}</code>.&nbsp;<code>createFactoryConfiguration()</code>&nbsp;has the same issue via the factory PID/alias.</li></ul><div>Both code paths are reachable by any caller holding the \"manager\" role under Karaf's shipped command/JMX ACL (<code>org.apache.karaf.command.acl.conf.cfg:</code>&nbsp;\"<code>update = manager</code>\"). 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 \"<code>admin</code>\" (<code>etc/users.properties</code>,&nbsp;<code>etc/*.acl.*.cfg</code>,&nbsp;<code>etc/org.apache.karaf.management.cfg</code>, and similar), allowing a manager-role user to grant themselves the admin role or otherwise take over the container.</div></div><div><br></div><div><span>ConfigMBeanImpl.install()</span>&nbsp;and the&nbsp;<code>config:install</code>&nbsp;shell command already guarded the equivalent risk on their own code path with a&nbsp;<code>finalname.contains(\"..\")</code>&nbsp;string check, but that check does not stop absolute paths or symlink-based escapes, and it was never applied to&nbsp;<code>ConfigRepositoryImpl.update()</code>&nbsp;/&nbsp;<code>createFactoryConfiguration()</code>&nbsp;at all.</div>"}]}],"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"}]}],"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":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-09-29T09:15:41.656Z"}},{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-22","lang":"en","description":"CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"}]}],"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"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-01T14:10:47.838Z"}}]}}