CVE-2025-55740

Default Credentials in nginx-defender Configuration Files

Description

nginx-defender is a high-performance, enterprise-grade Web Application Firewall (WAF) and threat detection system engineered for modern web infrastructure. This is a configuration vulnerability affecting nginx-defender deployments. Example configuration files config.yaml and docker-compose.yml contain default credentials (default_password: "change_me_please", GF_SECURITY_ADMIN_PASSWORD=admin123). If users deploy nginx-defender without changing these defaults, attackers with network access could gain administrative control, bypassing security protections. The issue is addressed in v1.5.0 and later.

Category

6.5
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Affected: Anipaleja nginx-defender
Published at:
Updated at:

References

Link Tags
https://github.com/Anipaleja/nginx-defender/security/advisories/GHSA-pr72-8fxw-xx22

Frequently Asked Questions

What is the severity of CVE-2025-55740?
CVE-2025-55740 has been scored as a medium severity vulnerability.
How to fix CVE-2025-55740?
To fix CVE-2025-55740, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2025-55740 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-55740 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-55740?
CVE-2025-55740 affects Anipaleja nginx-defender.
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