RHSA-2025:4493 — Security Advisory

An update for the ruby:3.3 module is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Ruby is an extensible, interpreted, object-oriented, scripting language. It has features to process text files and to perform system management tasks.

Security Fix(es):

• net-imap: Net::IMAP vulnerable to possible DoS by memory exhaustion (CVE-2025-25186)

• CGI: Denial of Service in CGI::Cookie.parse (CVE-2025-27219)

• uri: userinfo leakage in URI#join, URI#merge and URI#+ (CVE-2025-27221)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.