SEPTEMBER 18, 2026
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Case File

CVE-2026-42258

MEDIUM · CVSS 5.3 EPSS 0.78% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-05-09 · Last synced 2026-08-04

CyberRota Analysis

This is a medium severity vulnerability with a CVSS score of 5.3. Public exploit code or proof-of-concept references have been detected in its references.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-42258
Severity
MEDIUM
CVSS
5.3
EPSS
0.78%

Original NVD 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.

Related CVEs

Other vulnerabilities affecting the same vendor(s)