What is RHSA-2026:36978?

RHSA-2026:36978 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Which CVE IDs does RHSA-2026:36978 cover?

RHSA-2026:36978 covers the following CVE IDs: 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-2026:36978?

RHSA-2026:36978 has a CVSS v3 base score of 7.1, published by Red Hat Product Security.

RHSA-2026:36978HighCVSS 7.1

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Vendor

Red Hat Product Security

Published

July 9, 2026

Last Modified

July 21, 2026

🔗 CVE IDs covered (2)

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

🔗 References (6)

selfhttps://access.redhat.com/errata/RHSA-2026:36978
externalhttps://images.redhat.com/
externalhttps://access.redhat.com/security/cve/CVE-2026-42257
externalhttps://access.redhat.com/security/updates/classification/
externalhttps://access.redhat.com/security/cve/CVE-2026-42258
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_36978.json