CVE-2018-12561

An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1. A regular...

8.8 HighFix available

An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1. A regular user can inject additional mount options such as file_mode= by manipulating (for example) the domain parameter of the samba URL.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: Low
Privileges needed: Low
User interaction: None

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: High

Exploit likelihood

1.38%Up 0.8 points since Apr 14, 2021

What each source reports

NVD Score used 8.8

Record: CVE-2018-12561
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0: 6.5 MediumAV:N/AC:L/Au:S/C:P/I:P/A:P
Weakness: CWE-20
Updated: 2026-11-02

CVE List No score

Record: CVE-2018-12561
Updated: 2026-11-02

EUVDEUVD-2018-4521 No score

Record: EUVD-2018-4521
Updated: 2026-11-03

GitHub AdvisoriesGHSA-gwwm-46xv-rghg 8.8

An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1. A regular...

Record: GHSA-gwwm-46xv-rghg
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness: CWE-20
Updated: 2026-11-02

OSV 8.8

Record: CVE-2018-12561
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVDEBIAN-CVE-2018-12561 8.8

Record: DEBIAN-CVE-2018-12561
CVSS 3.0: 8.8 HighCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Updated: 2026-11-02

OSVMGASA-2018-0314 No score

Updated cantata packages fix security vulnerability

The mount target path check in mounter.cpp 'mpOk()' is insufficient. A regular user can this way mount a CIFS filesystem anywhere, and not just beneath /home by passing relative path components (CVE-2018-12559).

Arbitrary unmounts can be performed by regular users the same way (CVE-2018-12560).

A regular user can inject additional mount options like file_mode= by manipulating e.g. the domain parameter of the samba URL (CVE-2018-12561).

The wrapper script 'mount.cifs.wrapper' uses the shell to forward the arguments to the actual mount.cifs binary. The shell evaluates wildcards which can also be injected (CVE-2018-12562).

To fix these issues, the vulnerable D-Bus service has been removed.

Record: MGASA-2018-0314
Updated: 2026-11-02

Affected products

cantata project cantata

Affected packages

Affected packages
Package	Affected	Fixed
`cantata` Debian:12	before 2.3.0.ds1-2	2.3.0.ds1-2
`cantata` Debian:13	before 2.3.0.ds1-2	2.3.0.ds1-2
`cantata` Debian:14	before 2.3.0.ds1-2	2.3.0.ds1-2
`cantata` Mageia:6 From an advisory covering 4 CVEs	before 2.0.1-5.1.mga6	2.0.1-5.1.mga6

History

History
Recorded	Changed	Sources
Nov 6, 2026	affected, facts
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2018-12561 is a high vulnerability (CVSS 8.8) in Cantata Project Cantata, published June 19, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.38%, the 72nd percentile. Fixed in cantata 2.3.0.ds1-2.