CVE-2026-40460
Published:May 13, 2026
Updated:May 17, 2026
When NGINX Plus or NGINX Open Source are configured to use the HTTP/3 QUIC module, an attacker may be able to spoof their source IP address allowing for bypass of authorization or bypass of rate limiting. Note: Software versions which have reached End of Technical Support (EoTS) are not evaluated.
Affected Packages
https://github.com/nginx/nginx.git (GITHUB):
Affected version(s) >=release-1.25.0 <release-1.31.0Fix Suggestion:
Update to version release-1.31.0https://github.com/nginx/nginx.git (GITHUB):
Affected version(s) =release-1.30.0 <release-1.30.1Fix Suggestion:
Update to version release-1.30.1Related Resources (1)
Do you need more information?
Contact UsCVSS v4
Base Score:
6.9
Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
NONE
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
NONE
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
6.5
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
LOW
Weakness Type (CWE)
Authentication Bypass by Spoofing