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Medium · 6.4 CVE-2026-94212 EUVD-2026-90765GHSA-9cp4-6jfv-7725

Apache APISIX: unauthenticated impersonation issue in saml-auth

Published Oct 1, 2026 · Updated Oct 1, 2026 · Assigned by apache

Description

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.

Affected products

VendorProductAffectedFixed
Apache Software Foundation Apache APISIX 3.17.0 – ≤ 3.18.0 —

References