CVE-2026-42257
MEDIUM SEVERITYVulnerability 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, several Net::IMAP commands accept a raw string argument that is sent to the server without validation or escaping. If this string is derived from user-controlled input, it may contain contain CRLF sequences, which an attacker can use to inject arbitrary IMAP commands. This issue has been patched in versions 0.4.24, 0.5.14, and 0.6.4.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-77
Source
GitHub
Vendor
rubygems
Product
net-imap
External References
- https://github.com/ruby/net-imap/security/advisories/GHSA-hm49-wcqc-g2xg
- https://github.com/ruby/net-imap/commit/0ec4fd351263e8b9a4f683713427827b7b1ad974
- https://github.com/ruby/net-imap/commit/47c72186d272441878ca73c9499f66013829ca2f
- https://github.com/ruby/net-imap/commit/6bf02aef7e0b5931010c36e377f79a71636b306b
- https://github.com/ruby/net-imap/commit/a4f7649c3da77dec7631f03a037a478eb4330048
- https://github.com/ruby/net-imap/commit/aec06996eb87a7e1bbcef1f9f8926e8add2b8c71
- https://github.com/ruby/net-imap/releases/tag/v0.4.24
- https://github.com/ruby/net-imap/releases/tag/v0.5.14
- https://github.com/ruby/net-imap/releases/tag/v0.6.4
- https://github.com/advisories/GHSA-hm49-wcqc-g2xg
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