PT-2026-48667 · Kong · Kong Enterprise Gateway

Published 2026-06-11 · Updated 2026-06-11 · CVE-2026-6338

NVD

CVSS v4.0

4.9

Medium

Base vector

AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P/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:A/V:X/RE:M/U:X

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.

Fix

HTTP Request/Response Smuggling

Weakness Enumeration

CWE-444

Related Identifiers

CVE-2026-6338

Affected Products

Kong Enterprise Gateway

References · 2

• https://nvd.nist.gov/vuln/detail/CVE-2026-6338 · Security Note
• https://support.konghq.com/support/s/article/CVE-2026-6338 · Vendor Advisory