{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-49939","assignerOrgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","state":"PUBLISHED","assignerShortName":"apache","dateReserved":"2026-06-02T15:37:15.047Z","datePublished":"2026-11-06T11:40:59.146Z","dateUpdated":"2026-11-06T19:05:08.502Z"},"containers":{"cna":{"providerMetadata":{"orgId":"f0158376-9dc2-43b6-827c-5f631a4d8d09","shortName":"apache","dateUpdated":"2026-11-06T11:40:59.146Z"},"title":"Apache James: Negative IMAP ACL administer authorization bypass through JMAP protocol","problemTypes":[{"descriptions":[{"description":"CWE-284 Improper Access Control","lang":"en","cweId":"CWE-284","type":"CWE"}]}],"source":{"discovery":"UNKNOWN"},"affected":[{"vendor":"Apache Software Foundation","product":"Apache James","versions":[{"status":"affected","version":"3.9.0","lessThan":"3.9.1","versionType":"semver"}],"defaultStatus":"unaffected"}],"descriptions":[{"value":"In Apache James server prior version 3.9.1 improper Access Control List processing is exposed by the JMAP protocol which do not account for negative rules positionned by IMAP protocol.\n\nThis results in users being able to administer folders in JMAP despite having being explicitly denied the right to do so in IMAP.\n\nUsers are recommended to upgrade to version 3.9.1 which fixes this issue.","lang":"en","supportingMedia":[{"type":"text/html","base64":false,"value":"In Apache James server prior version 3.9.1 improper Access Control List processing is exposed by the JMAP protocol which do not account for negative rules positionned by IMAP protocol.<br><br>This results in users being able to administer folders in JMAP despite having being explicitly denied the right to do so in IMAP.<br><br>Users are recommended to upgrade to version 3.9.1 which fixes this issue."}]}],"references":[{"url":"https://lists.apache.org/thread.html/7qwsmkk88xbfq4q9o0pz9bt8p9p1yjs7","tags":["vendor-advisory"]}],"metrics":[{"other":{"type":"Textual description of severity","content":{"text":"moderate"}},"scenarios":[{"lang":"en","value":"GENERAL"}]}],"credits":[{"lang":"en","value":"Thanks mitchell from revampstudio.com.au for the report","type":"finder"}],"x_generator":{"engine":"Vulnogram 0.2.0"}},"adp":[{"title":"CVE Program Container","references":[{"url":"http://www.openwall.com/lists/oss-security/2026/11/06/14"}],"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2026-11-06T19:05:08.502Z"}}]}}