What is RHSA-2026:40380?

RHSA-2026:40380 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Which CVE IDs does RHSA-2026:40380 cover?

RHSA-2026:40380 covers the following CVE IDs: CVE-2026-47240, CVE-2026-47241, CVE-2026-42257, 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-2026:40380?

RHSA-2026:40380 has a CVSS v3 base score of 7.1, published by Red Hat Product Security.

RHSA-2026:40380HighCVSS 7.1

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Vendor

Red Hat Product Security

Published

July 15, 2026

Last Modified

July 21, 2026

🔗 CVE IDs covered (4)

CVE-2026-47240 →CVE-2026-47241 →CVE-2026-42257 →CVE-2026-42258 →

📋 Description

CVE-2026-42257 — net-imap: Net::IMAP: Arbitrary IMAP command injection via CRLF sequences in unvalidated input CVE-2026-42258 — ruby/net-imap: ruby: Net::IMAP: IMAP Command Injection via Symbol Arguments CVE-2026-47240 — net-imap: Net::IMAP: Command injection via non-synchronizing literals CVE-2026-47241 — net-imap: rubygem-net-imap: Net::IMAP: Denial of Service via malformed command input

🔗 References (9)

selfhttps://access.redhat.com/errata/RHSA-2026:40380
externalhttps://access.redhat.com/security/cve/CVE-2026-47240
externalhttps://access.redhat.com/security/cve/CVE-2026-47241
externalhttps://access.redhat.com/security/cve/CVE-2026-47242
externalhttps://access.redhat.com/security/updates/classification/
externalhttps://images.redhat.com/
externalhttps://access.redhat.com/security/cve/CVE-2026-42257
externalhttps://access.redhat.com/security/cve/CVE-2026-42258
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_40380.json