{"id":"AZL-91281","summary":"CVE-2026-47240 affecting package ruby 3.3.5-9","details":"Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, several Net::IMAP commands accept a \"raw data\" argument that is sent verbatim after validation to prevent command injection. However, if a server does not support non-synchronizing literals, it may still be possible to inject arbitrary IMAP commands inside non-synchronizing literals.  A server without support for non-synchronizing literals may interpret the \"+}\\r\\n\" as the end of a malformed command line and respond with a tagged BAD. In that case, the contents of the literal will be interpreted as one or more new pipelined commands, allowing a CRLF command injection attack to succeed. This affects criteria for #search and #uid_search; search_keys for #sort, #thread, #uid_sort, and #uid_thread; and attr for #fetch and #uid_fetch. This vulnerability is fixed in 0.6.5 and 0.5.15.","modified":"2026-09-09T14:17:36.643337656Z","published":"2026-06-22T21:16:24Z","upstream":["CVE-2026-47240"],"references":[{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47240"}],"affected":[{"package":{"name":"ruby","ecosystem":"Azure Linux:3","purl":"pkg:rpm/azure-linux/ruby"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.3.5-9"}]}],"database_specific":{"source":"https://github.com/microsoft/AzureLinuxVulnerabilityData/blob/main/osv/AZL-91281.json"}}],"schema_version":"1.9.0"}