CVE-2026-97027Hinoki check available

Application restart loops via unchecked exported keys

Published Sep 28, 2026 · Updated Sep 29, 2026

Improper input validation in Flatpak on Red Hat Enterprise Linux 7, 8, 9, and 10 allows attackers to cause host application restart loops. During Desktop Entry and D-Bus Service export, Flatpak rewrites Exec but passes non-denylisted vendor-extension keys into host files; X-GNOME-AutoRestart can force restarts, while SystemdService can redirect D-Bus activation to a host unit. Exploitation requires installation of a malicious Flatpak application and host processing of its exports; the reported consequences are disruption and unintended host activation, not data access.

CVSS severity3.6
Low
EPSS probability0.13%
Next 30 days · Oct 19, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Improper input validation in Flatpak on Red Hat Enterprise Linux 7, 8, 9, and 10 allows attackers to cause host application restart loops. During Desktop Entry and D-Bus Service export, Flatpak rewrites Exec but passes non-denylisted vendor-extension keys into host files; X-GNOME-AutoRestart can force restarts, while SystemdService can redirect D-Bus activation to a host unit. Exploitation requires installation of a malicious Flatpak application and host processing of its exports; the reported consequences are disruption and unintended host activation, not data access.

The record

CVE
CVE-2026-97027
Published
Sep 28, 2026
Updated
Sep 29, 2026
Vendor
Commonhaus Foundation
Product
Red Hat Enterprise Linux 10
Classifications
CWE-20, T1499
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Sep 28, 2026CVE publishedPublication date reported by the CVE source.
  2. Sep 29, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected versions are unavailable in this record. Check the vendor advisory for version and patch details.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Commonhaus Foundation · Red Hat Enterprise Linux 10Affected versions are unavailable in this record.
Commonhaus Foundation · Red Hat Enterprise Linux 8Affected versions are unavailable in this record.
Commonhaus Foundation · Red Hat Enterprise Linux 7Affected versions are unavailable in this record.
Commonhaus Foundation · Red Hat Enterprise Linux 9Affected versions are unavailable in this record.

Published CVSS scores

3.6Red Hat CNACVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Activity data is delayed. The latest report is Sep 28, 2026.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 22, 2026Sep 28, 2026
Latest reporting daySep 28, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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