What is RHSA-2026:23420?

RHSA-2026:23420 is a security advisory published by Red Hat Product Security with High severity. Red Hat Security Advisory: flatpak security update

Which CVE IDs does RHSA-2026:23420 cover?

RHSA-2026:23420 covers the following CVE IDs: CVE-2026-34079, CVE-2026-34078. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of RHSA-2026:23420?

RHSA-2026:23420 has a CVSS v3 base score of 9.0, published by Red Hat Product Security.

RHSA-2026:23420HighCVSS 9.0

Red Hat Security Advisory: flatpak security update

Vendor

Red Hat Product Security

Published

June 4, 2026

Last Modified

June 12, 2026

🔗 CVE IDs covered (2)

CVE-2026-34079 →CVE-2026-34078 →

📋 Description

CVE-2026-34078 — flatpak: Flatpak: Arbitrary code execution via crafted symlinks in sandbox-expose options CVE-2026-34079 — flatpak: Flatpak: Arbitrary file deletion on host via improper cache file path validation

🔗 References (5)

selfhttps://access.redhat.com/errata/RHSA-2026:23420
externalhttps://access.redhat.com/security/updates/classification/#important
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2456276
externalhttps://bugzilla.redhat.com/show_bug.cgi?id=2456284
selfhttps://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_23420.json