🛡️ CVE-2026-34584
🟡 CVSS 5.4 — Medium ✅ No Known Exploit CWE-639 NVD
5.4
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity MEDIUM
CVSS Score 5.4
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
CWE CWE-639
Public Exploit ✅ No
Source NVD
Published 2026-04-02
Updated 2026-06-02
Modified 2026-04-10

Affected Packages

Software From version Fixed in
listmonk 4.1.0 6.1.0

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