Apache APISIX 3.17-3.18 SAML Signature Verification Flaw (CVE-2026-94212)
CVE-2026-94212 Published on October 1, 2026
Apache APISIX: unauthenticated impersonation issue in saml-auth
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.
Vulnerability Analysis
CVE-2026-94212 is exploitable with network access, and requires small amount of user privileges. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
Improper Verification of Cryptographic Signature
The software does not verify, or incorrectly verifies, the cryptographic signature for data.
Products Associated with CVE-2026-94212
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Affected Versions
Apache Software Foundation Apache APISIX:- Version 3.17.0, <= 3.18.0 is affected.