CVE-2026-47085

CVE-2026-47085 affects Cyrus IMAPD (up to 3.12.2). The flaw: URLAUTH token forgery via a missing mboxkey, allowing an attacker who knows a folder name the user never authorized to forge a valid URLAUTH by computing an HMAC-SHA1 with a predictable key, granting read access to the mailbox. Impact i...