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CVE-2026-97027— Flatpak: flatpak: denial of service via unsanitized keys in exported desktop entry / d-bus service files

Quick assessment

Affected
Red Hat Red Hat Enterprise Linux 10
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Flatpak 在导出应用程序的桌面入口（.desktop）和 D-Bus 服务（.service）文件时，会未经修改地透传任意厂商扩展键，而不是对其进行白名单验证。恶意 Flatpak 应用可以利用此漏洞导致拒绝服务（例如强制应用程序重启循环），或影响宿主机上的 D-Bus/systemd 激活行为，从而突破沙箱所允许的操作范围。

CVSS 3.6 · Low
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I. Basic Information for CVE-2026-97027

Vulnerability Information
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Vulnerability Title
Flatpak: flatpak: denial of service via unsanitized keys in exported desktop entry / d-bus service files
Source: CVE Program / CVE List V5
Vulnerability Description
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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Red Hat Red Hat Enterprise Linux 10 - cpe:/o:redhat:enterprise_linux:10
Red Hat Red Hat Enterprise Linux 7 - cpe:/o:redhat:enterprise_linux:7
Red Hat Red Hat Enterprise Linux 8 - cpe:/o:redhat:enterprise_linux:8
Red Hat Red Hat Enterprise Linux 9 - cpe:/o:redhat:enterprise_linux:9

II. Public POCs for CVE-2026-97027

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III. Intelligence Information for CVE-2026-97027

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Other References for CVE-2026-97027 (3)

Same Patch Batch · Red Hat · 2026-09-28 · 10 CVEs total

CVE-2026-101292 8.2 HIGH Artemis-core-client: unsafe reflection in apache activemq artemis federation message deser
CVE-2026-86330 7.2 HIGH Noobaa-core: noobaa-core: os command injection in cluster_internal_api.set_hostname_intern
CVE-2026-97023 7.1 HIGH Flatpak: flatpak: arbitrary file deletion in root context via path traversal in deploy dir
CVE-2026-87114 7.1 HIGH Kube-compare: container:// reference extraction runs the image entrypoint and silently esc
CVE-2026-102010 7.0 HIGH Gcc-toolset-15-gcc: gcc: gcc-toolset-16: gcc: denial of service via use-after-free in bina
CVE-2026-96740 6.5 MEDIUM Streamshub/console: console-operator: streams for apache kafka console: unfiltered kafka c
CVE-2026-97026 3.9 LOW Flatpak: flatpak: world-writable temporary child repositories in system-helper cache path
CVE-2026-101333 3.7 LOW Keycloak-services: keycloak-services: unbounded metric series creation via idp tag on brok
CVE-2026-97025 3.2 LOW Flatpak: flatpak: world-readable oci authentication token in system-helper cache path

IV. Related Vulnerabilities

Same product: Red Hat Enterprise Linux 10
Same vendor: Red Hat
Same weakness: CWE-20

V. Comments for CVE-2026-97027

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