What is CVE-2026-97027?

CVE-2026-97027 is a low-severity vulnerability in Red Hat Enterprise Linux 10, classified under Improper Input Validation. CVSS score: 3.6/10. Published 2026-09-28.

How severe is CVE-2026-97027?

Low severity. CVSS v3 base score is 3.6 out of 10.

Improper input validation in Red Hat Enterprise Linux 10

CVE-2026-97027

Flatpak passes through arbitrary vendor-extension keys unmodified when exporting an application's Desktop Entry (.desktop) and D-Bus Service (.service) files, instead of validating against an allowlist. A malicious Flatpak app can use this to cause denial of service (e.g. forced application restart loops) or to influence host D-Bus/systemd activation behavior beyond what the sandbox is intended to permit.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2026-09-28.

CVSS v3 metric

CVSS v3 base score 3.6 (Low). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

access.redhat.com/security/cve/CVE-2026-97027 (vdb-entry)
bugzilla.redhat.com/show_bug.cgi (issue-tracking)
github.com/flatpak/flatpak/security/advisories/GHSA-v64f-hrwr-j4vh

Frequently asked questions

What is CVE-2026-97027?: CVE-2026-97027 is a low-severity vulnerability in Red Hat Enterprise Linux 10, classified under Improper Input Validation. CVSS score: 3.6/10. Published 2026-09-28.
How severe is CVE-2026-97027?: Low severity. CVSS v3 base score is 3.6 out of 10.