CVE-2026-42946

published 2026-05-13

CVE-2026-42946: 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…

high 8.3 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 E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

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

8 ranges

Vendor	Product	Version range	Fixed in
f5	nginx_open_source	>= 0.8.42 < 1.30.1	1.30.1
f5	nginx_plus	—	—
f5	nginx_plus	>= R32 < R32 P6	R32 P6
f5	nginx_plus	>= R36 < R36 P4	R36 P4
insights-proxy	insights-proxy-container-rhel9	—	—
nginx_1.24	nginx	—	—
nginx_1.26	nginx	—	—
ubuntu	nginx	—	—

CWE-789 CWE-823