{"id":"CVE-2026-61908","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-61908","generatedAt":"2026-10-28T02:12:55.683Z","title":"A JMAP email-header blob ID can reference an out-of-bounds index.","description":"An issue was discovered in Cyrus IMAP before 3.12.4. A JMAP email-header blob ID can reference an out-of-bounds index. An authenticated user could attempt to download a crafted JMAP blob ID of the form H<emailid>-<index>, which could read past the end of the internal blob_headers array during download, exposing adjacent heap memory.","published":"2026-09-09T20:18:36.000Z","lastModified":"2026-09-16T15:24:33.000Z","status":"Analyzed","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":6.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-125"],"affected":["cyrus/imap"],"epss":{"score":0.00224,"percentile":0.12947,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.22%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://cyrusimap.org","tags":["Product"],"source":"cve@mitre.org"},{"url":"https://www.cyrusimap.org/3.12/imap/download/release-notes/3.10/x/3.10.4.html","tags":["Release Notes"],"source":"cve@mitre.org"},{"url":"https://www.cyrusimap.org/3.12/imap/download/release-notes/3.12/x/3.12.4.html","tags":["Release Notes"],"source":"cve@mitre.org"},{"url":"https://www.cyrusimap.org/3.12/imap/download/release-notes/3.8/x/3.8.8.html","tags":["Release Notes"],"source":"cve@mitre.org"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-61908","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}