CVE-2026-34584
listmonk: Broken Access Control in CSV Import (Unauthorized List Assignment)
CVSS Score
5.4
EPSS Score
0.0%
EPSS Percentile
0th
listmonk is a standalone, self-hosted, newsletter and mailing list manager. From version 4.1.0 to before version 6.1.0, bugs in list permission checks allows users in a multi-user environment to access to lists (which they don't have access to) under different scenarios. This only affects multi-user environments with untrusted users. This issue has been patched in version 6.1.0.
| CWE | CWE-639 |
| Vendor | knadh |
| Product | listmonk |
| Published | Apr 2, 2026 |
| Last Updated | Apr 2, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Affected Versions
knadh / listmonk
>= 4.1.0, < 6.1.0