Summary
nginx is a web and proxy server supporting HTTP and other protocols, with a focus on high concurrency, performance, and low memory usage.
Security Fix(es):
* nginx: NGINX: Arbitrary code execution via crafted HTTP requests (CVE-2026-42533)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 10
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | nginx | 2:1.20.1-28.el9_8.6.alma.1 |
| AlmaLinux · 9 | nginx-all-modules | 2:1.20.1-28.el9_8.6.alma.1 |
| AlmaLinux · 9 | nginx-core | 2:1.20.1-28.el9_8.6.alma.1 |
| AlmaLinux · 9 | nginx-filesystem | 2:1.20.1-28.el9_8.6.alma.1 |
| AlmaLinux · 9 | nginx-mod-devel | 2:1.20.1-28.el9_8.6.alma.1 |
| AlmaLinux · 9 | nginx-mod-http-image-filter | 2:1.20.1-28.el9_8.6.alma.1 |
| AlmaLinux · 9 | nginx-mod-http-perl | 2:1.20.1-28.el9_8.6.alma.1 |
| AlmaLinux · 9 | nginx-mod-http-xslt-filter | 2:1.20.1-28.el9_8.6.alma.1 |
| AlmaLinux · 9 | nginx-mod-mail | 2:1.20.1-28.el9_8.6.alma.1 |
| AlmaLinux · 9 | nginx-mod-stream | 2:1.20.1-28.el9_8.6.alma.1 |
Vulnerabilities 1
-
High 8.1CVE-2026-42533 Public exploit
NGINX Map directive and Regex matching vulnerability
A vulnerability exists in NGINX Plus and NGINX Open Source when a map directive uses regex matching and a string expression references the map's regex capture variables before referencing the map output variable. Alternatively, the same result could be achiev…