CVE Catalog

CVE-2026-14917

HighCVSS 7.7
Published: Updated: Translated: NVD NIST

Exploitation Probability (EPSS)

Elevated risk
0.69%

51th percentile - higher than 51% of all known CVEs

Summary

A SAML authentication bypass vulnerability affects the Kong SAML plugin when the validate_assertion_signature option is explicitly set to false. This option is enabled by default. When disabled, the plugin may extract the SAML identity from an unsigned assertion and authenticate the user without verifying a valid cryptographic signature.

Risk Assessment

An unauthenticated remote attacker may be able to submit a crafted SAML response and impersonate arbitrary users, including administrators, potentially leading to full system compromise.

Recommendation

Ensure the validate_assertion_signature option is enabled (default) and do not disable it without explicit need. Update the Kong SAML plugin to the latest version.

Related vulnerabilities

Original NVD description (English source)

A SAML authentication bypass vulnerability affects the Kong SAML plugin when the validate_assertion_signature option is explicitly set to false. This option is enabled by default. When disabled, the plugin may extract the SAML identity from an unsigned assertion and authenticate the user without verifying a valid cryptographic signature. As a result, an unauthenticated remote attacker may be able to submit a crafted SAML response and impersonate arbitrary users, including administrators

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