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3 vulnerabilities by knadh
CVE-2026-21483 (GCVE-0-2026-21483)
Vulnerability from cvelistv5 – Published: 2026-01-02 20:57 – Updated: 2026-01-02 21:18
VLAI?
Title
listmonk Vulnerable to Stored XSS Leading to Admin Account Takeover
Summary
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.
Severity ?
CWE
- CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
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CVE-2025-58430 (GCVE-0-2025-58430)
Vulnerability from cvelistv5 – Published: 2025-09-09 19:37 – Updated: 2025-09-10 13:55
VLAI?
Title
listmonk Vulnerable to CSRF to XSS Chain That Can Lead to Admin Account Takeover
Summary
listmonk is a standalone, self-hosted, newsletter and mailing list manager. In versions up to and including 1.1.0, every http request in addition to the session cookie `session` there included `nonce`. The value is not checked and validated by the backend, removing `nonce` allows the requests to be processed correctly. This may seem harmless, but if chained to other vulnerabilities it can become a critical vulnerability. Cross-site request forgery and cross-site scripting chained together can result in improper admin account creation. As of time of publication, no patched versions are available.
Severity ?
CWE
Assigner
References
| URL | Tags | ||||
|---|---|---|---|---|---|
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CVE-2025-49136 (GCVE-0-2025-49136)
Vulnerability from cvelistv5 – Published: 2025-06-09 16:21 – Updated: 2025-06-10 13:25
VLAI?
Title
listmonk's Sprig template Injection vulnerability leads to reading of Environment Variable for low privilege user
Summary
listmonk is a standalone, self-hosted, newsletter and mailing list manager. Starting in version 4.0.0 and prior to version 5.0.2, the `env` and `expandenv` template functions which is enabled by default in Sprig enables capturing of env variables on host. While this may not be a problem on single-user (super admin) installations, on multi-user installations, this allows non-super-admin users with campaign or template permissions to use the `{{ env }}` template expression to capture sensitive environment variables. Users should upgrade to v5.0.2 to mitigate the issue.
Severity ?
9.1 (Critical)
CWE
- CWE-1336 - Improper Neutralization of Special Elements Used in a Template Engine
Assigner
References
| URL | Tags | ||||||||||
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