Kong Enterprise Gateway prior 3.15.0.3 SAML plugin validate_assertion_signature data authenticity

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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9.5$0-$5k0.85-

Summaryinfo

A vulnerability classified as very critical was found in Kong Enterprise Gateway. Impacted is an unknown function of the component SAML plugin. Such manipulation of the argument validate_assertion_signature leads to data authenticity. This vulnerability is listed as CVE-2026-14917. The attack may be performed from remote. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Kong Enterprise Gateway and classified as very critical. Affected by this issue is an unknown function of the component SAML plugin. The manipulation of the argument validate_assertion_signature with an unknown input leads to a data authenticity vulnerability. Using CWE to declare the problem leads to CWE-345. The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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

The advisory is shared for download at developer.konghq.com. This vulnerability is handled as CVE-2026-14917 since 07/07/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 09/16/2026).

Upgrading to version 3.4.3.29, 3.10.0.17, 3.12.0.10, 3.13.0.9, 3.14.0.12 or 3.15.0.3 eliminates this vulnerability.

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Productinfo

Vendor

Name

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 10.0
VulDB Meta Temp Score: 9.5

VulDB Base Score: 10.0
VulDB Temp Score: 9.5
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Data authenticity
CWE: CWE-345
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Enterprise Gateway 3.4.3.29/3.10.0.17/3.12.0.10/3.13.0.9/3.14.0.12/3.15.0.3

Timelineinfo

07/07/2026 CVE reserved
09/16/2026 +71 days Advisory disclosed
09/16/2026 +0 days VulDB entry created
09/16/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: developer.konghq.com
Status: Confirmed

CVE: CVE-2026-14917 (🔒)
GCVE (CVE): GCVE-0-2026-14917
GCVE (VulDB): GCVE-100-405608

Entryinfo

Created: 09/16/2026 12:20
Changes: 09/16/2026 12:20 (66)
Complete: 🔍
Cache ID: 216::103

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