HIGH
Eclipse Mosquitto 1.5.x before 1.5.5 allows ACL bypass: if the option per_listener_settings was set to true, and the default listener was in use, and the default listener specified an acl_file, then the acl file was being ignored
Published Dec 13, 2018
7.5
HIGHCVSS 3.0
EPSS 1.65%
Description
Eclipse Mosquitto 1.5.x before 1.5.5 allows ACL bypass: if the option per_listener_settings was set to true, and the default listener was in use, and the default listener specified an acl_file, then the acl file was being ignored.
Affected products
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
7.5 HIGH NVD
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact High
Availability Impact None
5.0 MEDIUM NVD
AV:N/AC:L/Au:N/C:N/I:P/A:N
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact None
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
1.65% 0.01645
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.01645
Score over time
2021–2026- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Percentile over time
- EPSS v1
- EPSS v5
- EPSS v2
- EPSS v3
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.65% (0.01645) | 75.58th | v5 (v2026.06.15) |
| Sep 20, 2026 | 1.65% (0.01645) | 75.38th | v5 (v2026.06.15) |
| Jul 20, 2024 | 0.16% (0.00161) | 53.09th | v3 (v2023.03.01) |
| May 5, 2024 | 0.16% (0.00161) | 52.34th | v3 (v2023.03.01) |
| Dec 7, 2023 | 0.14% (0.00141) | 49.59th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.14% (0.00135) | 46.91th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.95% (0.00954) | 36.37th | v2 (v2022.01.01) |
| Feb 4, 2022 | 0.95% (0.00954) | 16.28th | v2 (v2022.01.01) |
| Feb 3, 2022 | 0.83% (0.00833) | 24.58th | v5 (v2026.06.15) |
| Apr 14, 2021 | 0.83% (0.00833) | 0.00th | v1 |
Weaknesses (1)
References (3)
- https://github.com/eclipse/mosquitto/blob/master/ChangeLog.txt x_refsource_MISCThird Party Advisory
- https://github.com/eclipse/mosquitto/commit/9097577b49b7fdcf45d30975976dd93808ccc0c4 x_refsource_MISCPatchThird Party Advisory
- https://github.com/eclipse/mosquitto/issues/1073 x_refsource_MISCIssue TrackingPatchThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/eclipse/mosquitto/blob/master/ChangeLog.txt | x_refsource_MISCThird Party Advisory | |
| https://github.com/eclipse/mosquitto/commit/9097577b49b7fdcf45d30975976dd93808ccc0c4 | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/eclipse/mosquitto/issues/1073 | x_refsource_MISCIssue TrackingPatchThird Party Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Dec 13, 2018
Updated Aug 5, 2024
Reserved Dec 13, 2018
Link CVE-2018-20145
CISA Vulnrichment
Updated n/a