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CVE PROGRAM SOURCE RECORD7.7 High

CVE-2026-14916

Kong API Gateway Enterprise: JWT Algorithm-Confusion

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Status
Published
Published
Updated
Assigning organization
Kong

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Kong Kong Enteprise Gateway

Default version status: unaffected

  • 3.15.0.0 to < 3.15.0.3affected
  • 3.14.0.0 to < 3.14.0.12affected
  • 3.13.0.0 to < 3.13.0.9affected
  • 3.12.0.0 to < 3.12.0.10affected
  • 3.10.0.0 to < 3.10.0.17affected
  • 3.4.0.0 to < 3.4.3.29affected

References