What is RHSA-2026:26187?

RHSA-2026:26187 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: python3.11 security update

Which CVE IDs does RHSA-2026:26187 cover?

RHSA-2026:26187 covers the following CVE IDs: CVE-2026-4786, CVE-2026-6100. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:26187?

RHSA-2026:26187 has a CVSS v3 base score of 8.1, published by Red Hat Product Security.

RHSA-2026:26187HighCVSS 8.1

Red Hat Security Advisory: python3.11 security update

Vendor

Red Hat Product Security

Published

June 16, 2026

Last Modified

June 24, 2026

🔗 CVE IDs covered (2)

CVE-2026-4786 →CVE-2026-6100 →

📋 Description

CVE-2026-4786 — python: cpython: Python: Arbitrary code execution via command injection in webbrowser.open() API CVE-2026-6100 — python: Python: Arbitrary code execution or information disclosure via use-after-free in decompression modules

🔗 References (5)

selfhttps://access.redhat.com/errata/RHSA-2026:26187
externalhttps://access.redhat.com/security/updates/classification/#important
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2457932
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2458049
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_26187.json