CVE-2025-58430: listmonk XSS — Exploit

Description

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.

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CVSS v3.1 Score

6.1

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

CWE-80 CWE-80

CWE-352 Cross-Site Request Forgery

Affected Products

Vendor	Product	Versions
nadh	listmonk	< 1.1.0

References

Exploits

https://github.com/knadh/listmonk/security/advisories/GHSA-rf24-wg77-gq7w https://github.com/knadh/listmonk/security/advisories/GHSA-rf24-wg77-gq7w

Frequently Asked Questions

What is CVE-2025-58430? +

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. It has a CVSS v3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2025-58430? +

CVE-2025-58430 has a CVSS v3.1 score of 6.1 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-58430? +

CVE-2025-58430 affects products from nadh, specifically: listmonk. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-58430? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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