CVE-2026-34584: medium-severity vulnerability in knadh listmonk
listmonk: Broken Access Control in CSV Import (Unauthorized List Assignment)
Published
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.4epss 0.3%
exploitation probability
0.3%top 80% of all CVEs
observed exploitation
nono source reports it
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Affected products
knadh · listmonkRelated CVEs — knadh listmonk
In the same product, most dangerous first.
CVE-2025-49136CRITICALlistmonk's Sprig template Injection vulnerability leads to reading of Environment Variable for low privilege userEPSS 1.5%CVE-2026-62361MEDIUMlistmonk: SQL Injection in `/api/subscribers/export` bypasses table access control, leaking admin password hashes and SMTP credentialsEPSS 0.4%CVE-2026-34828HIGHlistmonk: Active sessions remain valid after password reset and password changeEPSS 0.4%CVE-2026-21483MEDIUMlistmonk Vulnerable to Stored XSS Leading to Admin Account TakeoverEPSS 0.2%CVE-2025-58430HIGHlistmonk Vulnerable to CSRF to XSS Chain That Can Lead to Admin Account TakeoverEPSS 0.1%