Bug 2468494 (CVE-2026-42257) - CVE-2026-42257 net-imap: Net::IMAP: Arbitrary IMAP command injection via CRLF sequences in unvalidated input
Summary: CVE-2026-42257 net-imap: Net::IMAP: Arbitrary IMAP command injection via CRLF...
Keywords:
Status: NEW
Alias: CVE-2026-42257
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
URL:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-05-09 20:01 UTC by OSIDB Bzimport
Modified: 2026-05-12 10:32 UTC (History)
15 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-05-09 20:01:12 UTC 
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.
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