CVE-2026-42946
NGINX ngx_http_scgi_module and ngx_http_uwsgi_module vulnerability
7.4
HIGH
CVSS 3.1
EPSS 0.93%
Description
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.
How to fix CVE-2026-42946
To remediate CVE-2026-42946, upgrade the affected package to a fixed version below.
- —upgrade to 1.26.3-r1 or later
Is CVE-2026-42946 being exploited?
Low — EPSS is 0.9%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 1.26.3-r1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.4 | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H |