net-imap: Command Injection via unvalidated Symbol inputs_CVE-2026-42258

5.8 / 10

MEDIUM

CVSS:4.0/AV:L/AC:H/AT:P/PR:N/UI:P/VC:N/VI:H/VA:L/SC:N/SI:N/SA:N

Description

Net::IMAP implements Internet Message Access Protocol (IMAP) client functionality in Ruby. Prior to versions 0.4.24, 0.5.14, and 0.6.4, symbol arguments to commands are vulnerable to a CRLF Injection / IMAP Command injection via Symbol arguments passed to IMAP commands. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.

Basic Information

ID CVE-2026-42258

Source GitHub_M

Published May 9, 2026 at 19:40

Affected Product

Vendor ruby

Product net-imap

Version < 0.4.24

Affected Versions ruby net-imap < 0.4.24
ruby net-imap >= 0.5.0, < 0.5.14
ruby net-imap >= 0.6.0, < 0.6.4

CWE Classification

CWE-77 CWE-93

References

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    "published": "2026-05-09T19:40:49.405Z",
    "modified": "2026-05-09T19:40:49.405Z",
    "type": "cve",
    "title": "net-imap: Command Injection via unvalidated Symbol inputs",
    "source": "GitHub_M",
    "references": "https://github.com/ruby/net-imap/security/advisories/GHSA-75xq-5h9v-w6px\nhttps://github.com/ruby/net-imap/releases/tag/v0.4.24\nhttps://github.com/ruby/net-imap/releases/tag/v0.5.14\nhttps://github.com/ruby/net-imap/releases/tag/v0.6.4",
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