CVE-2026-34584 — listmonk: Broken Access Control in CSV Import (Unauthorized List Assignment)
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-us…
Published: 2026-04-02 · CVSS: 5.4 · CVSS 3.1
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7