---
id: CVE-2026-94212
title: "Improper verification of cryptographic signature vulnerability in Apache APISIX.\n\n\n\nAny unauthenticated attacker could impersonate any user on every route protected by the saml-auth plugin under default configuration.\_This issue affects …"
summary: "Improper verification of cryptographic signature vulnerability in Apache APISIX.\n\n\n\nAny unauthenticated attacker could impersonate any user on every route protected by the saml-auth plugin under default configuration.\_This issue affects …"
severity: medium
cvss: 6.4
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N'
cwe:
  - CWE-347
vendor: Apache Software Foundation
product: Apache APISIX
affected:
  - apache_apisix >= 3.17.0 <= 3.18.0
published: '2026-10-01'
updated: '2026-10-01'
sourceUpdated: '2026-10-01T12:54:27.463'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-94212'
references:
  - url: 'https://lists.apache.org/thread.html/1230fnojnmc7bfz3n0nkt7tkcld9d1sc'
    label: security@apache.org
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-01T11:42:53.820Z'
---

## Overview

Improper verification of cryptographic signature vulnerability in Apache APISIX.



Any unauthenticated attacker could impersonate any user on every route protected by the saml-auth plugin under default configuration. This issue affects Apache APISIX: from 3.17.0 through 3.18.0.



Users are recommended to upgrade to version 3.19.0, which fixes the issue.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.