CVE-2026-124666Apache APISIX: Multi-auth preserves client-supplied Wolf identity headers

Description

Authentication bypass by spoofing vulnerability in Apache APISIX. On a route where multi-auth falls back from wolf-rbac to another successful authenticator, client-supplied Wolf identity headers can remain in the request. A downstream service that relies on those documented headers may therefore receive an identity that was not established by the successful authenticator. This issue affects Apache APISIX: from 3.8.0 through 3.19.0. Users are recommended to upgrade to version 3.20.0, which fixes the issue.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

References and patches

• https://lists.apache.org/thread/1kpvbj2m069bnhod8rwyx0mdz5hkwkml vendor-advisory
• http://www.openwall.com/lists/oss-security/2026/11/13/5