Vulnerabilities CVE-2026-42258

CVE-2026-42258

Medium

Open

TLP:CLEAR

net-imap: Command Injection via unvalidated Symbol inputs

NVD CVE.org

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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.

Details

CVSS Score: 5.8
EPSS Score ⓘ: 0.78%

53th percentile
CVSS Vector: 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
Confidence: 90%
Published: May 9, 2026
Last Modified: Aug 20, 2026

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