CVE-2026-94212 PUBLISHED

Apache APISIX: unauthenticated impersonation issue in saml-auth

Assigner: apache
Reserved: 21.09.2026 Published: 01.10.2026 Updated: 01.10.2026

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.

Metrics

CVSS 4.0

CVSS Vector: 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
CVSS Score: 6.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	None	Confidentiality	High
Attack Complexity	Low	Integrity	None	Integrity	High
Attack Requirements	None	Availability	None	Availability	None
Privileges Required	Low
User Interaction	None

CVSS 4.0

Product Status

Vendor	Apache Software Foundation
Product	Apache APISIX
Versions	Default: unaffected affected from 3.17.0 to 3.18.0 (incl.)

Credits

LucasFutures reporter
shreemaan-abhishek coordinator
shreemaan-abhishek remediation developer

References

https://lists.apache.org/thread.html/1230fnojnmc7bfz3n0nkt7tkcld9d1sc

Problem Types

CWE-347 Improper verification of cryptographic signature CWE