---
id: "CVE-2026-124666"
page: "https://infrastack.ai/live/CVE-2026-124666"
kind: "vulnerability"
aliases: ["CVE-2026-124666"]
title: "Apache APISIX: spoofed identity headers can pass authentication on multi-auth routes"
severity: "medium"
cvss: 6.4
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["apache-apisix", "api-gateway", "infrastructure", "multi-auth", "wolf-rbac"]
not_affected_if: ["no-multi-auth", "no-wolf-rbac", "versions-outside-range"]
published_at: "2026-11-13T18:17:31+00:00"
first_seen_at: "2026-11-13T18:49:28+00:00"
updated_at: "2026-11-13T18:51:42+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-124666", "first_seen_at": "2026-11-13T18:49:28+00:00"}]
exploit_sources: []
---

# Apache APISIX: spoofed identity headers can pass authentication on multi-auth routes

Link for people: https://infrastack.ai/live/CVE-2026-124666 (this .md is for agents)

On Apache APISIX routes using multi-auth, client-supplied wolf-rbac identity headers can survive when authentication falls back to another authenticator. A downstream service that trusts those headers may then accept an identity that was never authenticated.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Apache APISIX version; affected range is `3.8.0` through `3.19.0`.
- Look for routes that combine the `multi-auth` plugin with `wolf-rbac`, and confirm whether downstream services read the Wolf identity headers.

## Fix

- Apache APISIX: upgrade to `3.20.0`.

## Timeline

- 2026-11-13T18:49:28+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-124666

## From the sources

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.

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