CVE-2026-39999
Apache 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.
INFO
Published Date :
June 19, 2026, 1:07 p.m.
Last Modified :
June 19, 2026, 1:07 p.m.
Remotely Exploit :
Yes !
Source :
apache
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | HIGH | f0158376-9dc2-43b6-827c-5f631a4d8d09 | ||||
| CVSS 4.0 | HIGH | [email protected] |
Solution
- Upgrade Apache APISIX to version v3.17.0.
- Review jwt-auth plugin configurations.
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