CVE-2025-49136
9.0 · CRITICALOverview
CVE-2025-49136 is a critical-severity vulnerability affecting nadh listmonk. It was published on June 9, 2025 and has a CVSS 3.1 base score of 9.0 (CRITICAL).
This vulnerability has a CVSS 3.1 base score of 9.0, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
Technical Description
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.
Remediation
Check the references section for vendor advisories and patches from nadh. Update listmonk to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| nadh | listmonk | >= 4.0.0, < 5.0.2 | Affected |
Frequently Asked Questions
What is CVE-2025-49136?
CVE-2025-49136 is a critical-severity vulnerability affecting nadh listmonk. It was published on June 9, 2025 and has a CVSS 3.1 base score of 9.0 (CRITICAL).
How severe is CVE-2025-49136?
This vulnerability has a CVSS 3.1 base score of 9.0, rated CRITICAL. It can be exploited remotely over the network. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2025-49136?
Check the references section for vendor advisories and patches from nadh. Update listmonk to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2025-49136?
CyberStrike's AI-powered security agents can automatically detect CVE-2025-49136 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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