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HIGHCVE-2026-42946Published Modified CNA f5

CVE-2026-42946: NGINX ngx_http_scgi_module and ngx_http_uwsgi_module vulnerability

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.

Metrics

CVSS v4.0
8.3
Severity
HIGH
Fixed in
1.30.1
Affected Products
2

Fix available

1.30.11.31.0R32 P6R36 P4R37
Patch commits
Affected packages
  • F5 / NGINX Plus
    < R36 P4 (from R36) · < R32 P6 (from R32)
    Fixed in R37
  • F5 / NGINX Open Source
    < 1.30.1 (from 0.8.42)
    Fixed in 1.31.0
CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N
References