What’s Vulnerable › Vulnerabilities

CVE-2023-33141: Yet Another Reverse Proxy (YARP) Denial of Service Vulnerability

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2023-06-23 · updated 2026-06-17
• Weakness: CWE-400

Description

Yet Another Reverse Proxy (YARP) Denial of Service Vulnerability

Affected products

• Microsoft Yet Another Reverse Proxy: from 1.0.0 before 1.1.2; 2.0.0 — fixed in 1.1.2
• Microsoft YARP 1.0: from 1.0.0 before 1.1.2 — fixed in 1.1.2
• Microsoft YARP 2.0: from 1.0.0 before 2.0.1 — fixed in 2.0.1

How to fix

Upgrade to a fixed version: Microsoft Yet Another Reverse Proxy 1.1.2; Microsoft YARP 1.0 1.1.2; Microsoft YARP 2.0 2.0.1. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33141
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-33141

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