HIGH 8.1 Microsoft PoC
CVE-2026-9256
NGINX ngx_http_rewrite_module vulnerability
Microsoft Security Update 2026-May: NGINX ngx_http_rewrite_module vulnerability
Affected Products
- azl3 nginx 1.28.3-1 on Azure Linux 3.0
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-9256
- https://nvd.nist.gov/vuln/detail/CVE-2026-9256
This high severity vulnerability with a CVSS score of 8.1 was published on 2026-05-12 via Microsoft. 🚨 A public proof-of-concept exploit is available on GitHub. EPSS score: 10.1% (top 5% of all CVEs by exploitation probability). Affected: azl3 nginx 1.28.3-1 on Azure Linux 3.0.
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