What is RHSA-2026:33577?

RHSA-2026:33577 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: ruby:4.0 security update

Which CVE IDs does RHSA-2026:33577 cover?

RHSA-2026:33577 covers the following CVE IDs: CVE-2026-42245, CVE-2026-42246, CVE-2026-42258. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:33577?

RHSA-2026:33577 has a CVSS v3 base score of 7.4, published by Red Hat Product Security.

RHSA-2026:33577HighCVSS 7.4

Red Hat Security Advisory: ruby:4.0 security update

Vendor

Red Hat Product Security

Published

June 30, 2026

Last Modified

July 1, 2026

🔗 CVE IDs covered (3)

CVE-2026-42245 →CVE-2026-42246 →CVE-2026-42258 →

📋 Description

CVE-2026-42245 — ruby: net-imap: Net::IMAP: Denial of Service via crafted IMAP responses CVE-2026-42246 — net-imap: ruby: Net::IMAP: Information disclosure via man-in-the-middle attack bypassing TLS CVE-2026-42258 — ruby/net-imap: ruby: Net::IMAP: IMAP Command Injection via Symbol Arguments

🔗 References (6)

selfhttps://access.redhat.com/errata/RHSA-2026:33577
externalhttps://access.redhat.com/security/updates/classification/#important
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2468495
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2468498
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2468499
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_33577.json