Security · High impactFan score 43 · Tier B

CVE-2026-124679: Apache APISIX: jwe-decrypt and forward-auth may pass a client-supplied identity header

The Brief

CVE-2026-124679 is an authentication bypass by spoofing in Apache APISIX, reported with a CVSS 4.0 base score of 7.8 (high).
Per the advisory, on routes using jwe-decrypt or forward-auth, a client-supplied identity header may be passed upstream. Affected versions are 3.18.0 through 3.19.0.

Why it matters

If you run Apache APISIX 3.18.0 through 3.19.0 with jwe-decrypt or forward-auth routes, a remote client may be able to impersonate another identity without authenticating.

Who’s affected

Teams running Apache APISIX 3.18.0 through 3.19.0 with jwe-decrypt or forward-auth routes

What to do

Check whether any APISIX 3.18.0 through 3.19.0 deployment uses the jwe-decrypt or forward-auth plugins.

Apache APISIX 3.18.0 through 3.19.0
CVE-2026-124679
#security
#apache-apisix
#authentication
#cve
#api-gateway

Posted by Abhishek Choudhary on Nov 13 Severity: CVSS 4.0: 7.8 (high) CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:H/SA:N Affected versions: - Apache APISIX 3.18.0 through 3.19.0 Description: Authentication bypass by spoofing vulnerability in Apache APISIX. On routes…

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Timeline

Nov 13
CVE-2026-124679 disclosed in Open Source Security advisory
Nov 13 · 9:14 PM
Open Source Security
CVE-2026-124679: Apache APISIX: jwe-decrypt and forward-auth may pass a client-supplied identity header