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CVE-2026-42258

Published: May 9, 2026

Modified: May 11, 2026

PUBLISHED

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.

Vendor	Product	Versions
ruby	net-imap	affected `< 0.4.24` affected `>= 0.5.0, < 0.5.14` affected `>= 0.6.0, < 0.6.4`

Weaknesses (CWE)

References

https://github.com/ruby/net-imap/security/advisories/GHSA-75xq-5h9v-w6px

x_refsource_CONFIRM

https://github.com/ruby/net-imap/releases/tag/v0.4.24

x_refsource_MISC

https://github.com/ruby/net-imap/releases/tag/v0.5.14

x_refsource_MISC

https://github.com/ruby/net-imap/releases/tag/v0.6.4

x_refsource_MISC

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