Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nadh | Listmonk | >= 4.1.0, < 6.1.0 |
Related Weaknesses (CWE)
References
- https://github.com/knadh/listmonk/commit/347f5976759232c36e571cf58b4bfe33c2794f3Patch
- https://github.com/knadh/listmonk/releases/tag/v6.1.0ProductRelease Notes
- https://github.com/knadh/listmonk/security/advisories/GHSA-85j8-5c6w-gcpvPatchVendor Advisory
FAQ
What is CVE-2026-34584?
CVE-2026-34584 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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 acces...
How severe is CVE-2026-34584?
CVE-2026-34584 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-34584?
Check the references section above for vendor advisories and patch information. Affected products include: Nadh Listmonk.