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Vulnerabilities

Threat intelligence · CVE-2025-49136

listmonk is a standalone, self-hosted, newsletter and mailing list manager.

Published Jun 9, 2025 · catalog updated Jun 10, 2025 · listmonk is a standalone,

Check if you run it

No confirmed exploitation is on record for CVE-2025-49136. EPSS is 1.58%. Act only if a listed version of listmonk is a standalone, is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (listmonk is a standalone,).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Critical9.1
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
1.58%
Remediation
Version ranges on file
Affected products
vendor knadh listmonk 4.0.0, < 5.0.2

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 and 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 template expression to capture sensitive environment variables. Users should upgrade to v5.0.2 to mitigate the issue.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor knadh listmonk 4.0.0, < 5.0.24.0.0, < 5.0.2

How to fix CVE-2025-49136

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-49136. EPSS is 1.58%. Act only if a listed version of listmonk is a standalone, is installed.

Which versions are affected?

Compare what you have installed with knadh listmonk 4.0.0, < 5.0.2 4.0.0, < 5.0.2. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 1.58%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 9, 2025 · EUVD

    Detected

    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 and 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 templa

  2. Jun 10, 2025 · EUVD

    Updated

    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 and 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 templa

Sources

  • CVE.orgVulnerability recordCVE-2025-49136

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-49136

    30-day exploitation probability 1.6%

    first.org
  • EUVDVulnerability recordEUVD-2025-17462

    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 and 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-

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.