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NGINX ngx_http_scgi_module and ngx_http_uwsgi_module vulnerability

F5 NGINX · CVE-2026-42946
0 news outlets1 CERTs and agencies0 researchers

What is it?

A vulnerability exists in the ngx_http_scgi_module and ngx_http_uwsgi_module modules that may result in excessive memory allocation or an over-read of data. When scgi_pass or uwsgi_pass is configured, an unauthenticated attacker with man-in-the-middle (MITM) ability to control responses from an upstream server may be able to read the memory of the NGINX worker process or restart it.  Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.

Evidence

Official warnings (1)
National CERTs, government cyber security agencies and the vendor’s own advisories

Exploitation

  • Public proof of concept
  • Exploited in the wild
  • Listed as known exploited
CVSS
6.5
EPSS
0.9%
First seen
7 h ago
Status
confirmed

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