CVE-2026-34584

5.4 mediumEPSS 0.2%

Medium (5.4) in nadh listmonk. EPSS 0.2% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

5.4 medium

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

EPSS: 0.2% chance of exploitation in the next 30 days; higher than 7% of CVEs (scores of 2026-10-31)
CWE: CWE-639
Published: 2026-04-02
Modified: 2026-07-24
Record from: the NVD, synced 2026-10-19

Affected

nadh:listmonk

References

https://github.com/knadh/listmonk/commit/347f5976759232c36e571cf58b4bfe33c2794f35
https://github.com/knadh/listmonk/releases/tag/v6.1.0
https://github.com/knadh/listmonk/security/advisories/GHSA-85j8-5c6w-gcpv

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