Vulnerability in Static Web Server Affects Security of Sensitive Metrics
CVE-2026-75601

4.3MEDIUM

Key Information:

Vendor

Static-web-server

Status
Static-web-server
Vendor
CVE Published:
26 August 2026

What is CVE-2026-75601?

The Static Web Server, particularly in version 2.43.0, is susceptible to an improper authentication flaw. When both basic authentication and metrics features are enabled, the server processes requests to the /metrics endpoint before implementing the basic-auth check. This loophole allows an unauthorized remote attacker to access sensitive Prometheus metrics, potentially revealing vital information such as virtual host names, request volumes, error rates, latency distributions, and active connections. The issue has been rectified in version 2.44.0.

Affected Version(s)

static-web-server < 2.44.0

References

https://github.com/static-web-server/static-web-server/se...
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https://github.com/static-web-server/static-web-server/co...
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CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.