{"id":"CVE-2026-47242","summary":"Net::IMAP: Command Injection via ID command argument","details":"Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to 0.6.5 and 0.5.15, when Net::IMAP#id is called with a hash argument, although the ID field value strings are correctly quoted (escaping quoted specials), they were not validated to prohibit CRLF sequences. While Net::IMAP#enable does process its arguments for aliases, it does not validate them as valid atoms (or as a list of valid atoms). The #to_s value is sent verbatim. Arguments to either command could be used by an attacker to inject arbitrary IMAP commands. This vulnerability is fixed in 0.6.5 and 0.5.15.","aliases":["GHSA-46q3-7gv7-qmgg"],"modified":"2026-07-08T08:05:18.252315183Z","published":"2026-06-22T20:19:41.222Z","related":["CGA-3p52-q9cm-66f5"],"database_specific":{"cna_assigner":"GitHub_M","cwe_ids":["CWE-77","CWE-93"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47242.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/47xxx/CVE-2026-47242.json"},{"type":"ADVISORY","url":"https://github.com/ruby/net-imap/security/advisories/GHSA-46q3-7gv7-qmgg"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-47242"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/ruby/net-imap","events":[{"introduced":"567518cae5500f7c4776a1fd4e9bbd599e98b9bf"},{"fixed":"357f3b5aee4d2140635b6ba242fbb952491e2d28"},{"introduced":"0"},{"fixed":"ce20fc8e9974ed87d0848dc411eef490623cdeb9"}],"database_specific":{"source":"AFFECTED_FIELD","extracted_events":[{"introduced":"0.6.0"},{"fixed":"0.6.4.1"},{"introduced":"0"},{"fixed":"0.5.15"}]}}],"versions":["v0.5.14","v0.6.4","v0.5.13","v0.6.2","v0.6.0","v0.5.12","v0.5.11","v0.5.10","v0.5.9","v0.5.8","v0.5.7","v0.5.6","v0.5.5","v0.5.4","v0.5.3","v0.5.2","v0.5.1","v0.5.0","v0.4.14","v0.4.13","v0.4.12","v0.4.11","v0.4.10","v0.4.9","v0.3.4","v0.2.3","v0.4.8","v0.4.7","v0.4.6","v0.4.5","v0.4.4","v0.4.3","v0.4.2","v0.4.1","v0.4.0","v0.3.3","v0.3.2","v0.3.1","v0.3.0","v0.2.2","v0.2.1","v0.2.0","v0.1.1","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-47242.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N"}]}