CVE-2026-42946 — NGINX ngx_http_scgi_module and ngx_http_uwsgi_module vulnerability

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
F5 / NGINX Plus	unaffected R37 before *; affected R36 before R36 P4; affected R32 before R32 P6
F5 / NGINX Open Source	unaffected 1.31.0 before *; affected 0.8.42 before 1.30.1

CWE

CWE-789, CWE-823

References

https://my.f5.com/manage/s/article/K000161027

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.