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CVE PROGRAM SOURCE RECORD9.1 Critical

CVE-2025-49136

listmonk's Sprig template Injection vulnerability leads to reading of Environment Variable for low privilege user

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

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

knadh listmonk

  • >= 4.0.0, < 5.0.2affected

References