CVE-2026-40460CWE-290

NGINX ngx_quic_module vulnerability

Medium · published May 13, 2026

CVSS v4.0
6.9
EPSS
0%
Percentile
31.3
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v4.0
6.9 · MEDIUM
Vector
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
EPSS
0.00384 · 31.3th percentile
Weakness
CWE-290 · Authentication Bypass by Spoofing
Published
2026-05-13T14:12Z
EPSS history
Timeline
  • 13 MAY 14:12Z
    NGINX ngx_quic_module vulnerability
    cvelistv5