CVE-2026-42946
MEDIUMNGINX ngx_http_scgi_module and ngx_http_uwsgi_module vulnerability
Title source: cnaDescription
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.
References (1)
Core 1
Core References
Vendor Advisory vendor-advisory
patch
https://my.f5.com/manage/s/article/K000161027
Scores
CVSS v3
6.5
EPSS
0.0007
EPSS Percentile
21.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-789
CWE-823
Status
published
Products (5)
F5/NGINX Open Source
0.8.42 - 1.30.1
F5/NGINX Open Source
1.31.0
F5/NGINX Plus
R32 - R32 P6
F5/NGINX Plus
R36 - R36 P4
F5/NGINX Plus
R37
Published
May 13, 2026
Tracked Since
May 13, 2026