CVE Catalog

CVE-2026-14916

HighCVSS 7.7
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
0.67%

50th percentile - higher than 50% of all known CVEs

Summary

Kong API Gateway Enterprise has a JWT signature verification vulnerability in MCP OAuth2 and DataKit components. Improper validation of the signing algorithm allows an unauthenticated attacker to craft a forged JWT that is incorrectly accepted as valid.

Risk Assessment

Risk of authentication bypass and compromise of confidentiality, integrity, and availability.

Recommendation

Apply vendor patches and restrict access to components performing JWT validation.

Related vulnerabilities

Original NVD description (English source)

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.

Vulnerability data from NVD (NIST) · CISA KEV · EPSS