CVE-2026-34584

| EUVD-2026-18450 MEDIUM
2026-04-02 GitHub_M
5.4
CVSS 3.1
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CVSS Vector

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

Lifecycle Timeline

3
Analysis Generated
Apr 02, 2026 - 18:15 vuln.today
EUVD ID Assigned
Apr 02, 2026 - 18:15 euvd
EUVD-2026-18450
CVE Published
Apr 02, 2026 - 17:31 nvd
MEDIUM 5.4

Tags

Authentication Bypass

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.

Analysis

Listmonk versions 4.1.0 through 6.0.x contain authorization bypass vulnerabilities in list permission checks that allow authenticated users in multi-user environments to access mailing lists they should not have access to. The vulnerability affects only self-hosted deployments with multiple untrusted users and has been patched in version 6.1.0. …

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Priority Score

27
Low Medium High Critical
KEV: 0
EPSS: +0.0
CVSS: +27
POC: 0

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CVE-2026-34584 vulnerability details – vuln.today
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