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 or Denial of Service via heap-based buffer overflow with crafted HTTP/2 headers (CVE-2026-42055)
Bug Fix(es) and Enhancement(s):
* nginx:1.26/nginx: "HTTP/2 bomb" nginx fix breaks module ABI causing crashes [rhel-9.8.z] (JIRA:Rocky Linux-191774)
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 2
| Release | Package | Fixed in |
|---|---|---|
| Rocky Linux · 9 | nginx | 2:1.26.3-9.module+el9.8.0+40222+e48d13b6.1 |
| Rocky Linux · 9 | nginx | 2:1.26.3-9.module+el9.8.0+40194+40adfc1b |
Vulnerabilities 1
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High 8.1CVE-2026-42055 Public exploit
NGINX ngx_http_proxy_v2_module and ngx_http_grpc_module vulnerability
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_proxy_v2_module and ngx_http_grpc_module modules. This vulnerability exists when the proxy_http_version to 2 or grpc_pass directives are used to proxy HTTP/2 traffic, the ignore_invalid_hea…
References
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report
https://bugzilla.redhat.com/show_bug.cgi?id=2489866