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CVE-2018-6560

27
FAUCET Score

CVE-2018-6560 describes a sandbox escape vulnerability in Flatpak versions prior to 0.8.9, and specific 0.9.x and 0.10.x releases, also affecting Red Hat distributions. This flaw allows an attacker to break out of the Flatpak sandbox by sending specially crafted D-Bus messages to the host, exploiting a discrepancy in whitespace handling between the proxy and daemon. With a CVSS v3 score of 8.8 (HIGH), it presents a significant risk, enabling local attackers to achieve high impact on confidentiality, integrity, and availability with low attack complexity. There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 0.8.9CPE matchmatch criteria
cpe:2.3:a:flatpak:flatpak:*:*:*:*:*:*:*:*
>= 0.9.1, <= 0.9.99CPE matchmatch criteria
cpe:2.3:a:flatpak:flatpak:*:*:*:*:*:*:*:*
>= 0.10.0, < 0.10.3CPE matchmatch criteria
cpe:2.3:a:flatpak:flatpak:*:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*
7.0CPE matchmatch criteria
cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

8.8HIGH

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

Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
CHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.0
Impact Score
6.0
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.8%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 73rd percentile among its peer group of 16,994 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.2 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
redhatpatch availablevia redhat_api
Product: Red Hat Enterprise Linux 7Fixed in: flatpak-0:0.8.8-4.el7_5
View patch

Vendor Advisories (1)

redhatCVE-2018-6560Moderate

flatpak: sandbox escape in D-Bus filtering by a crafted authentication handshake

Jan 29, 2018

References

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