# CVE-2025-49136

## Summary

- **CVE ID:** CVE-2025-49136
- **Severity:** CRITICAL
- **CVSS Score:** 9.1 (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H)
- **CWE:** CWE-1336
- **Published:** Jun 9, 2025
- **Last Modified:** Mar 13, 2026

## 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.

## Affected Products

- knadh — listmonk (>= 4.0.0, < 5.0.2)

## References

- [CNA](https://github.com/knadh/listmonk/security/advisories/GHSA-jc7g-x28f-3v3h)
- [CNA](https://github.com/knadh/listmonk/commit/d27d2c32cf3af2d0b24e29ea5a686ba149b49b3e)
- [CNA](https://github.com/knadh/listmonk/releases/tag/v5.0.2)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 1.44%
- **EPSS Percentile:** 71.5

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._