7.0High
CVE-2026-39999Apache APISIX: JWT Algorithm Confusion allows authentication bypass
Description
Authentication Bypass by Spoofing vulnerability in Apache APISIX. The attacker can completely bypass authentication capitalising on certain configurations of jwt-auth plugin. This issue affects Apache APISIX: from v2.2 through v3.16.0. Users are recommended to upgrade to version v3.17.0, which fixes the issue.
Weakness (CWE):
CWE-290
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| Apache Software Foundation | Apache APISIX | 2.2 – ≤ 3.16.0 | |
| apache | apisix | 2.2 – < 3.17.0 |
References and patches
- https://lists.apache.org/thread/nfopt8cnxd3k0rs1oxtr7lzxrdw4mojq vendor-advisoryVendor AdvisoryMailing List
- http://www.openwall.com/lists/oss-security/2026/06/19/5 Third Party Advisory
CPE matches (NVD) (1)
cpe:2.3:a:apache:apisix:*:*:*:*:*:*:*:*≥ 2.2 < 3.17.0