CVE-2021-23409 - CVE House

Status published High CVE-2021-23409

Denial of Service (DoS)

7.5 CVSS

Vulnerability Description

The package github.com/pires/go-proxyproto before 0.6.0 are vulnerable to Denial of Service (DoS) via creating connections without the proxy protocol header.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-23409

Check My Exposure

Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

tecnobrat

References

More from n/a

View All →

CVE-2025-9910

Versions of the package jsondiffpatch before 0.7.2 are vulnerable to...

Low 2.3

CVE-2025-9802

RemoteClinic profile.php sql injection

Medium 5.1

CVE-2025-9799

Langfuse Webhook promptRouter.ts promptChangeEventSourcing server-side request forgery

Low 2.3

CVE-2025-9775

RemoteClinic edit-my-profile.php unrestricted upload

Medium 6.9

CVE-2025-9774

RemoteClinic edit-patient.php information disclosure

Medium 5.3

Affected Vendor

n/a

View all reports →

Affected Software

github.com/pires/go-proxyproto

Vulnerable Versions:

unspecified

Timeline

Official Publish: July 21st, 2021

Last Modified: September 16th, 2024

Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.