CVE-2026-14917: Software Security Vulnerability Vulnerability

HIGH
Advisory Identifier: GHSA-p8wp-m49r-5g58
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CWE-288
Published
Advisory Summary

CVE-2026-14917 is a HIGH security vulnerability vulnerability (CWE-288: Authentication Bypass Using an Alternate Path or Channel) affecting Software libraries in the Maven ecosystem. The weakness occurs when the product requires authentication, but the product has an alternate path or channel that does not require authentication.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-14917 at a Glance

CVE Identifier CVE-2026-14917
GHSA Identifier GHSA-p8wp-m49r-5g58
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-288: Authentication Bypass Using an Alternate Path or Channel
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2026-14917

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-14917, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-288: Authentication Bypass Using an Alternate Path or Channel, where the product requires authentication, but the product has an alternate path or channel that does not require authentication. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

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

References

NVD — CVE-2026-14917 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-14917
developer.konghq.com/gateway/changelog/ WEB
https://developer.konghq.com/gateway/changelog/#3-15-0-3

Frequently Asked Questions

What is CVE-2026-14917?
CVE-2026-14917 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-288: Authentication Bypass Using an Alternate Path or Channel.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-14917?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What CWE is associated with CVE-2026-14917?
CVE-2026-14917 is classified under CWE-288: Authentication Bypass Using an Alternate Path or Channel (The product requires authentication, but the product has an alternate path or channel that does not require authentication.).
How can I check Maven dependencies for CVE-2026-14917?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-p8wp-m49r-5g58",
  "modified" : "2026-09-16T12:30:30Z",
  "published" : "2026-09-16T12:30:30Z",
  "aliases" : [ "CVE-2026-14917" ],
  "details" : "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.\n\n\n\nAs a result, an unauthenticated remote attacker may be able to submit a crafted SAML response and impersonate arbitrary users, including administrators",
  "severity" : [ {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-14917"
  }, {
    "type" : "WEB",
    "url" : "https://developer.konghq.com/gateway/changelog/#3-15-0-3"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-288" ],
    "severity" : "HIGH",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-09-16T10:16:48Z"
  }
}