CVE-2026-34584

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.

PUBLISHED Reserved 2026-03-30 | Published 2026-04-02 | Updated 2026-04-02 | Assigner GitHub_M

Problem types

CWE-639: Authorization Bypass Through User-Controlled Key

Product status

References

github.com/...stmonk/security/advisories/GHSA-85j8-5c6w-gcpv

github.com/...ommit/347f5976759232c36e571cf58b4bfe33c2794f35

github.com/knadh/listmonk/releases/tag/v6.1.0

cve.org (CVE-2026-34584)

nvd.nist.gov (CVE-2026-34584)

Download JSON