CVE-2026-47241

A flaw was found in Net::IMAP, a Ruby client library for the Internet Message Access Protocol (IMAP). This vulnerability allows a remote attacker to cause a denial of service by sending specially crafted input to certain Net::IMAP commands. When a raw string argument, derived from user-controlled input, is not properly validated, it can force subsequent commands to be absorbed, leading to a hung connection and preventing further processing until the connection is closed.

A Moderate denial of service flaw was found in the Net::IMAP Ruby client library. This issue occurs when a remote attacker sends specially crafted input to certain Net::IMAP commands, causing the client connection to hang indefinitely. This can prevent further processing of IMAP commands until the connection is manually closed, impacting the availability of services relying on the Net::IMAP client.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.