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Vulnerability record · CVE-2018-6560 · published 2 February 2018

CVE-2018-6560: Flatpak interpretation conflict vulnerability

Flatpak · Flatpak

In dbus-proxy/flatpak-proxy.c in Flatpak before 0.8.9, and 0.9.x and 0.10.x before 0.10.3, crafted D-Bus messages to the host can be used to break out of the sandbox, because whitespace handling in the proxy is not identical to whitespace handling in the daemon.

8.8 CVSS 3.0 High EPSS 0.41% · top 67.1% CWE-436 · Interpretation conflict
8.8CVSS 3.0 base score, v2 4.6
0.41%EPSS exploitation probability, 30 days
NoNot in CISA KEV
7Affected product versions listed by NVD
8References
17 Jun 2026Last modified by NVD

Description

In dbus-proxy/flatpak-proxy.c in Flatpak before 0.8.9, and 0.9.x and 0.10.x before 0.10.3, crafted D-Bus messages to the host can be used to break out of the sandbox, because whitespace handling in the proxy is not identical to whitespace handling in the daemon.

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Affected products

7 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://access.redhat.com/errata/RHSA-2018:2766 Third Party Advisory
https://github.com/flatpak/flatpak/commit/52346bf187b5a7f1c0fe9075b328b7ad6abe78f6 PatchVendor Advisory
https://github.com/flatpak/flatpak/releases/tag/0.10.3 Release Notes
https://github.com/flatpak/flatpak/releases/tag/0.8.9 Release Notes
https://access.redhat.com/errata/RHSA-2018:2766 Third Party Advisory
https://github.com/flatpak/flatpak/commit/52346bf187b5a7f1c0fe9075b328b7ad6abe78f6 PatchVendor Advisory
https://github.com/flatpak/flatpak/releases/tag/0.10.3 Release Notes
https://github.com/flatpak/flatpak/releases/tag/0.8.9 Release Notes

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Source: NIST National Vulnerability Database (record CVE-2018-6560), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.