RLSA-2026:50773

Ruby is the interpreted scripting language for quick and easy object-oriented programming. It has many features to process text files and to do system management tasks (as in Perl). It is simple, straight-forward, and extensible.

Security Fix(es):

zlib: zlib: Memory corruption via buffer overflow in Zlib::GzipReader (CVE-2026-27820)
net-imap: Net::IMAP: Arbitrary IMAP command injection via CRLF sequences in unvalidated input (CVE-2026-42257)
ruby/net-imap: ruby: Net::IMAP: Denial of Service via large iteration count in SCRAM authentication (CVE-2026-42256)
net-imap: Net::IMAP: Command injection via non-synchronizing literals (CVE-2026-47240)
net-imap: Net::IMAP: Arbitrary IMAP command injection due to improper input validation (CVE-2026-47242)
net-imap: rubygem-net-imap: Net::IMAP: Denial of Service via malformed command input (CVE-2026-47241)

Bug Fix(es) and Enhancement(s):

ruby4.0: Rebase to the latest Ruby 4.0 release [rhel-10.2.z] (JIRA:Rocky Linux-211310)

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.

Database specific

{
    "license_url": "https://creativecommons.org/licenses/by/4.0/",
    "source_advisory": "RHSA-2026:50773",
    "license": "CC-BY-4.0"
}

References

Credits

- Rocky Enterprise Software Foundation
- Red Hat

Affected packages

Rocky Linux:10 / ruby4.0

Package

Name: ruby4.0
Purl: pkg:rpm/rocky-linux/ruby4.0?distro=rocky-linux-10&epoch=0

Affected ranges

Type

ECOSYSTEM

Events

Introduced

Fixed

0:4.0.6-36.el10_2

Database specific

Show details

{
    "yum_repository": "AppStream"
}

Database specific

source

"https://storage.googleapis.com/resf-osv-data/RLSA-2026:50773.json"