Apache APISIX 3.18.x-3.19.x Auth Bypass via jwe-decrypt/forward-auth
CVE-2026-124679 Published on November 13, 2026
Apache APISIX: jwe-decrypt and forward-auth may pass a client-supplied identity header
Authentication bypass by spoofing vulnerability in Apache APISIX.
On routes using jwe-decrypt with strict: false and a
forward_header distinct from the token header an unauthenticated
client can supply the value the upstream treats as gateway-decrypted
plaintext. Similar can happen when forward-auth is configured with allow_degradation: true, and the auth service is unavailable.
This issue affects Apache APISIX: from 3.18.0 through 3.19.0.
Users are recommended to upgrade to version 3.20.0, which fixes the issue.
Vulnerability Analysis
CVE-2026-124679 can be exploited with network access, and does not require authorization privileges or user interaction. 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
Authentication Bypass by Spoofing
This attack-focused weakness is caused by improperly implemented authentication schemes that are subject to spoofing attacks.
Products Associated with CVE-2026-124679
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Affected Versions
Apache Software Foundation Apache APISIX:- Version 3.18.0, <= 3.19.0 is affected.
Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.