CVE-2026-21483: fallo de gravedad media en knadh listmonk
listmonk Vulnerable to Stored XSS Leading to Admin Account Takeover
Publicada el
13Vexday Risk Score
Sin señal de explotación. Ningún artefacto público de explotación conocido hasta ahora.
ssvc Trackcvss 5.4epss 0.2%
probabilidad de explotación
0.2%top 88% de las CVE
explotación observada
noninguna fuente lo reporta
listmonk is a standalone, self-hosted, newsletter and mailing list manager. Prior to version 6.0.0, lower-privileged user with campaign management permissions can inject malicious JavaScript into campaigns or templates. When a higher-privileged user (Super Admin) views or previews this content, the XSS executes in their browser context, allowing the attacker to perform privileged actions such as creating backdoor admin accounts. The attack can be weaponized via the public archive feature, where victims simply need to visit a link - no preview click required. Version 6.0.0 fixes the issue.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P
Productos afectados
knadh · listmonkCVEs relacionadas — knadh listmonk
En el mismo producto, de las más peligrosas a las menos.
CVE-2025-49136CRITICALlistmonk's Sprig template Injection vulnerability leads to reading of Environment Variable for low privilege userEPSS 1.6%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-2026-34584MEDIUMlistmonk: Broken Access Control in CSV Import (Unauthorized List Assignment)EPSS 0.3%CVE-2025-58430HIGHlistmonk Vulnerable to CSRF to XSS Chain That Can Lead to Admin Account TakeoverEPSS 0.1%