Bug 2552355 (CVE-2026-95101)

Summary: CVE-2026-95101 nginx: nginx: Data injection in proxied requests via HTTP/3 request buffering
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerabilityAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: ---
Doc Text:
A flaw was found in NGINX. When HTTP/3 is used with proxy request buffering enabled, an unauthenticated remote attacker can inject arbitrary data into proxied requests. This vulnerability allows an attacker to manipulate traffic forwarded to backend servers, compromising data integrity.
 Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description OSIDB Bzimport 2026-10-14 14:52:01 UTC 
Description
NGINX Plus and NGINX Open Source have a vulnerability in the ngx_http_v3_module module. When using HTTP/3 with 

proxy_request_buffering on directive, an unauthenticated attacker may be able to inject data in the proxied request.

Impact


This vulnerability may allow remote attackers to 

inject data in the proxied request.  There is no control plane exposure; this is a data plane issue only.






Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.