HIGH 8.1 Microsoft PoC
CVE-2026-42055
NGINX ngx_http_proxy_v2_module and ngx_http_grpc_module vulnerability
Microsoft Security Update 2026-Jun: NGINX ngx_http_proxy_v2_module and ngx_http_grpc_module vulnerability
Affected Products
- azl3 nginx 1.28.3-5 on Azure Linux 3.0
- azl3 nginx 1.28.3-6 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-42055
- https://nvd.nist.gov/vuln/detail/CVE-2026-42055
This high severity vulnerability with a CVSS score of 8.1 was published on 2026-06-09 via Microsoft. 🚨 A public proof-of-concept exploit is available on GitHub. EPSS score: 6.5% (top 6% of all CVEs by exploitation probability). Affected: azl3 nginx 1.28.3-5 on Azure Linux 3.0, azl3 nginx 1.28.3-6 on Azure Linux 3.0.
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