CVE-2026-6338CWE-444

HTTP request smuggling in Kong Enteprise Gateway

Medium · published June 11, 2026

CVSS v4.0
4.9
EPSS
0%
Percentile
40.9
In the wild
Unconfirmed
What it is

A HTTP request smuggling and desynchronization vulnerability affects Kong Gateway Enterprise 3.4, 3.10, 3.11, 3.12, 3.13, and 3.14 series. The vulnerability is caused by a parsing flaw in Kong’s HTTP request processing pipeline when handling untrusted HTTP/1.1 traffic.

The record
Technical detail
CVSS v4.0
4.9 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P/R:A/RE:M
EPSS
0.00486 · 40.9th percentile
Weakness
CWE-444 · Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Published
2026-06-11T13:47Z
EPSS history
Timeline
  • 11 JUN 13:47Z
    HTTP request smuggling in Kong Enteprise Gateway
    cvelistv5