CVE-2026-40460

published 2026-05-13

CVE-2026-40460: 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…

medium 6.9 CVSS 4.0

AV N AC L AT N PR N UI N VC L VI N VA L SC N SI N SA N E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

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

8 ranges

Vendor	Product	Version range	Fixed in
f5	nginx_open_source	>= 1.26.0 < 1.30.1	1.30.1
f5	nginx_plus	—	—
f5	nginx_plus	—	—
f5	nginx_plus	>= R32 < R32 P6	R32 P6
f5	nginx_plus	>= R36 < R36 P4	R36 P4
nginx_1.24	nginx	—	—
nginx_1.26	nginx	—	—
ubuntu	nginx	—	—

CWE-290