CVE-2018-12559: An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1

Q: How do I fix CVE-2018-12559?

cantata: upgrade to newer than 2.3.1. Exact commands for each OS are on this page.

Q: Is CVE-2018-12559 being exploited?

CVE-2018-12559 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2018-12559 affect?

CVE-2018-12559 affects cantata. Severity is high (CVSS 8.8). An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1. The mount target path check in mounter.cpp `mpOk()` is insufficient. A regular user can consequently mount a CIFS filesystem anywhere (e.g., outside of t

This month

HIGH 8.8UPGRADE

CVE-2018-12559 is a high-severity flaw (CVSS 8.8) affecting cantata. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1. The mount target path check in mounter.cpp `mpOk()` is insufficient. A regular user can consequently mount a CIFS filesystem anywhere (e.g., outside of the /home directory tree) by passing directory traversal sequences such as a home/../usr substring.

Why this priority

High severity

A fixed release or distro patch exists.

Risk facts

CVSS score	8.8 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	Low
User interaction	None
EPSS exploit chance	2.1% (top 19%)
CISA exploited list	No
Weakness	CWE-22
Published	2018-06-19
Last modified	2026-06-17

Publisher (CNA): MITRE · Vendor: cantata project

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2018-06-19 05:29 UTCPublished CVE record published
2026-06-17 01:37 UTCUpdated Record last modified

cantata project cantata UPGRADE

Affected: <= 2.3.1

Fixed in: newer than 2.3.1

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy cantata || rpm -q cantata || cantata --version

2. UPGRADE to newer than 2.3.1 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade cantata

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade cantata

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2018-12559?

cantata: upgrade to newer than 2.3.1. Exact commands for each OS are on this page.

Is CVE-2018-12559 being exploited?

CVE-2018-12559 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2018-12559 affect?

CVE-2018-12559 affects cantata. Severity is high (CVSS 8.8). An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1. The mount target path check in mounter.cpp `mpOk()` is insufficient. A regular user can consequently mount a CIFS filesystem anywhere (e.g., outside of t

How urgent is CVE-2018-12559?

Priority 51/100. High severity

Related CVEs

CVE-2018-12562 CRITICAL 9.8 UPGRADE An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1
CVE-2018-12561 HIGH 8.8 UPGRADE An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1
CVE-2018-12560 MEDIUM 6.5 UPGRADE An issue was discovered in the cantata-mounter D-Bus service in Cantata through 2.3.1

References

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