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CVE-2018-12546

In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message...

6.5 MediumFix available

In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.

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
None
Integrity
High
Availability
None

Exploit likelihood

0.80%Up 0.4 points since Apr 14, 2021
90%50%10%1%

What each source reports

NVD Score used 6.5

In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.

Record
CVE-2018-12546
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS 2.0
4.0 MediumAV:N/AC:L/Au:S/C:N/I:P/A:N
Weakness
CWE-284, CWE-732
Updated
2026-11-02
CVE List No score

In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.

Record
CVE-2018-12546
Weakness
CWE-284
Updated
2026-11-02
EUVDEUVD-2018-4506 No score

In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.

Record
EUVD-2018-4506
Updated
2026-11-03
GitHub AdvisoriesGHSA-mx88-h56f-w25v 6.5

In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message...

In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.

Record
GHSA-mx88-h56f-w25v
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Weakness
CWE-732
Updated
2026-11-02
OSVALPINE-CVE-2018-12546 6.5

In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.

Record
ALPINE-CVE-2018-12546
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVBELL-CVE-2018-12546 6.5

CVE-2018-12546 does not affect BellSoft software

Record
BELL-CVE-2018-12546
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
Show 6 moreShow less
OSV 6.5

In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.

Record
CVE-2018-12546
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVDEBIAN-CVE-2018-12546 6.5

In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.

Record
DEBIAN-CVE-2018-12546
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVUBUNTU-CVE-2018-12546 6.5

In Eclipse Mosquitto version 1.0 to 1.5.5 (inclusive) when a client publishes a retained message to a topic, then has its access to that topic revoked, the retained message will still be published to clients that subscribe to that topic in the future. In some applications this may result in clients being able cause effects that would otherwise not be allowed.

Record
UBUNTU-CVE-2018-12546
CVSS 3.1
6.5 MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
CVSS 3.0
6.5 MediumCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Updated
2026-11-02
OSVopenSUSE-SU-2019:0233-1 No score

Security update for mosquitto

This update for mosquitto fixes the following issues:

Security issues fixed:

  • CVE-2018-12546: Fixed an issue with revoked access to topics (bsc#1125019).
  • CVE-2018-12551: Fixed an issue which allowed malformed data in the password file to be treated as valid (bsc#1125020).
  • CVE-2018-12550: Fixed an an issue which treats an empty ACL file wrongly (bsc#1125021).
Record
openSUSE-SU-2019:0233-1
Updated
2026-11-02
OSVopenSUSE-SU-2019:0237-1 No score

Security update for mosquitto

This update for mosquitto fixes the following issues:

Security issues fixed:

  • CVE-2018-12546: Fixed an issue with revoked access to topics (bsc#1125019).
  • CVE-2018-12551: Fixed an issue which allowed malformed data in the password file to be treated as valid (bsc#1125020).
  • CVE-2018-12550: Fixed an an issue which treats an empty ACL file wrongly (bsc#1125021).

This update was imported from the openSUSE:Leap:15.0:Update update project.

Record
openSUSE-SU-2019:0237-1
Updated
2026-11-02
OSVopenSUSE-SU-2024:11057-1 No score

libmosquitto1-2.0.11-1.2 on GA media

These are all security issues fixed in the libmosquitto1-2.0.11-1.2 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:11057-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
mosquitto
Alpine:v3.10
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.11
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.12
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.13
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.14
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.15
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.16
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.17
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.18
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.19
 1.0 up to 1.5.6-r0
1.5.6-r0
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Affected packages
PackageAffectedFixed
mosquitto
Alpine:v3.20
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.21
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.22
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.23
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.24
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Alpine:v3.7
 1.0 up to 1.4.15-r1
1.4.15-r1
mosquitto
Alpine:v3.8
 1.0 up to 1.4.15-r5
1.4.15-r5
mosquitto
Alpine:v3.9
 1.0 up to 1.5.6-r0
1.5.6-r0
mosquitto
Debian:12
 before 1.5.6-1
1.5.6-1
mosquitto
Debian:13
 before 1.5.6-1
1.5.6-1
mosquitto
Debian:14
 before 1.5.6-1
1.5.6-1
mosquitto
Debian:9
From an advisory covering 3 CVEs
 before 1.4.10-3+deb9u3, plus listed versions
1.4.10-31.4.10-3+deb9u11.4.10-3+deb9u2
1.4.10-3+deb9u3
mosquitto
Ubuntu:16.04:LTS
 before 1.4.8-1ubuntu0.16.04.5, plus listed versions
1.4.3-11.4.4-11.4.7-11.4.8-11.4.8-1build1
Show 4 moreShow less
1.4.8-1ubuntu0.16.04.11.4.8-1ubuntu0.16.04.21.4.8-1ubuntu0.16.04.31.4.8-1ubuntu0.16.04.4
1.4.8-1ubuntu0.16.04.5
mosquitto
Ubuntu:18.04:LTS
 before 1.4.15-2ubuntu0.18.04.1, plus listed versions
1.4.12-11.4.14-11.4.14-21.4.14-2build11.4.15-11.4.15-2
1.4.15-2ubuntu0.18.04.1
mosquitto
SUSE:Package Hub 15
From an advisory covering 3 CVEs
 before 1.4.15-bp150.3.3.1
1.4.15-bp150.3.3.1

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

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

In short

CVE-2018-12546 is a medium vulnerability (CVSS 6.5) in Eclipse Mosquitto, published February 10, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.80%, the 56th percentile. Fixed in mosquitto 1.5.6-r0.

References

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