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CVE-2026-14917

Kong API Gateway Enterprise: SAML Authentication bypass

CVSS 4.0 7.7 HIGHCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-14917

Published

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

Read the publisher's advisory

Affected versions, risk and source history

cve-program · CVE-2026-14917

Published

Kong Enterprise Gateway

Vendor product

Publisher's version information

Shown as published. These rules are not interpreted as NuGet package version ranges.

{
                    "vendor": "Kong",
                    "product": "Kong Enterprise Gateway",
                    "platforms": [
                        "Linux"
                    ],
                    "versions": [
                        {
                            "status": "affected",
                            "version": "3.15.0.0",
                            "lessThan": "3.15.0.3",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "3.14.0.0",
                            "lessThan": "3.14.0.12",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "3.13.0.0",
                            "lessThan": "3.13.0.9",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "3.12.0.0",
                            "lessThan": "3.12.0.10",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "3.10.0.0",
                            "lessThan": "3.10.0.17",
                            "versionType": "custom"
                        },
                        {
                            "status": "affected",
                            "version": "3.4.0.0",
                            "lessThan": "3.4.3.29",
                            "versionType": "custom"
                        }
                    ],
                    "defaultStatus": "unaffected"
                }

Original source record · Cite this exact observation · Complete original publisher JSON