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TI-2023-16319 Aliases CVE-2023-33141GHSA-jrjw-qgr2-wfcg

Yet Another Reverse Proxy (YARP) Denial of Service Vulnerability

Priority MEDIUM 43CWE-400Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub. Impact type from Microsoft.

Summary

Yet Another Reverse Proxy (YARP) Denial of Service Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0222 82nd percentileScored 2026-11-07
Fix Fixed YARP 1.0 (Microsoft): 1.1.2YARP 2.0 (Microsoft): 2.0.1+1 more product

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftYARP 1.01.0.0 to before 1.1.21.1.2Patch availableCNA
MicrosoftYARP 2.01.0.0 to before 2.0.12.0.1Patch availableCNA
—Yarp.ReverseProxy (NuGet)before 1.1.21.1.2Patch availableGHSA-jrjw-qgr2-wfcg
—Yarp.ReverseProxy (NuGet)2.0.0 to before 2.0.12.0.1Patch availableGHSA-jrjw-qgr2-wfcg
  • YARP 1.0 VendorMicrosoft Affected 1.0.0 to before 1.1.2 Fixed in 1.1.2 Patch available CNA
  • YARP 2.0 VendorMicrosoft Affected 1.0.0 to before 2.0.1 Fixed in 2.0.1 Patch available CNA
  • Yarp.ReverseProxy (NuGet) Vendor— Affected before 1.1.2 Fixed in 1.1.2 Patch available GHSA-jrjw-qgr2-wfcg
  • Yarp.ReverseProxy (NuGet) Vendor— Affected 2.0.0 to before 2.0.1 Fixed in 2.0.1 Patch available GHSA-jrjw-qgr2-wfcg

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:yet_another_reverse_proxy:*:*:*:*:*:*:*:*1.0.0 to before 1.1.2VulnerableMicrosoft
cpe:2.3:a:microsoft:yet_another_reverse_proxy:2.0.0:*:*:*:*:*:*:*2.0.0VulnerableMicrosoft
  • cpe:2.3:a:microsoft:yet_another_reverse_proxy:*:*:*:*:*:*:*:* Versions 1.0.0 to before 1.1.2 Vulnerable ·Microsoft
  • cpe:2.3:a:microsoft:yet_another_reverse_proxy:2.0.0:*:*:*:*:*:*:* Versions 2.0.0 Vulnerable ·Microsoft

Remediation

  • Fix · CNA YARP 1.0 (Microsoft) Fixed in 1.1.2
  • Fix · CNA YARP 2.0 (Microsoft) Fixed in 2.0.1
  • Fix · GHSA-jrjw-qgr2-wfcg Yarp.ReverseProxy (NuGet) Fixed in 1.1.2 Advisory →
  • Fix · GHSA-jrjw-qgr2-wfcg Yarp.ReverseProxy (NuGet) Fixed in 2.0.1 Advisory →

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Denial of Service
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely
ProductStatusPlan or fix
YARP 1.0Fixed 1.1.2 · Security Update
YARP 2.0Fixed 2.0.1 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-33141
  2. 2026-10-03 Alias added: GHSA-jrjw-qgr2-wfcg

References

Patch 1

Advisory 1

Other 4

  • TI-2022-10155 YARP Denial of Service Vulnerability CVSS 3.1HIGH 7.5

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences