Net::IMAP: Command Injection via non-synchronizing literal in “raw” argument_CVE-2026-47240

{
    "lastseen": "",
    "description": "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.",
    "published": "2026-06-22T20:17:15.376Z",
    "modified": "2026-06-22T20:17:15.376Z",
    "type": "cve",
    "title": "Net::IMAP: Command Injection via non-synchronizing literal in \"raw\" argument",
    "source": "GitHub_M",
    "references": "https://github.com/ruby/net-imap/security/advisories/GHSA-8p34-64r3-mwg8",
    "id": "CVE-2026-47240",
    "bulletinFamily": "",
    "cwe": [
        "CWE-77",
        "CWE-93"
    ],
    "cvelist": null,
    "sourceData": "ruby net-imap >= 0.6.0, < 0.6.4.1\nruby net-imap < 0.5.15",
    "sourceHref": "",
    "cvss": {
        "score": 5.8,
        "severity": "MEDIUM",
        "vector": "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",
        "version": "4.0"
    },
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        "baseScore": 0,
        "baseSeverity": "",
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        "privilegesRequired": "",
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        "confidentialityImpact": "",
        "integrityImpact": "",
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        "cvssV3": {
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    },
    "href": "",
    "category_name": "CVE",
    "post_link": "",
    "product": "net-imap",
    "version": ">= 0.6.0, < 0.6.4.1",
    "vendor": "ruby",
    "ai_description": "",
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    "ai_score": 0
}