CVE-2026-14916— Kong API Gateway Enterprise: JWT Algorithm-Confusion
Quick assessment
Affected
Kong Kong Enteprise Gateway
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible
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I. Basic Information for CVE-2026-14916
Vulnerability Information
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Vulnerability Title
Kong API Gateway Enterprise: JWT Algorithm-Confusion
Source: CVE Program / CVE List V5
Vulnerability Description
A JWT signature verification vulnerability affects Kong components that perform JWT validation for MCP OAuth2 or DataKit integrations inside Kong API Gateway Enterprise. The affected code does not properly validate that the JWT signing algorithm is compatible with the type of key used for verification.
As a result, an unauthenticated remote attacker may be able to craft a forged JWT that is incorrectly accepted as valid, leading to authentication bypass and potential compromise of confidentiality, integrity, and availability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
非预期数据类型处理不恰当
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Kong | Kong Enteprise Gateway | 3.15.0.0 ~ 3.15.0.3 | - |
|
II. Public POCs for CVE-2026-14916
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2026-14916 (1)
-
Kong Gateway changelog - Kong Gateway | Kong Docs release-notes
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V. Comments for CVE-2026-14916
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