CVE-2026-39999
Last modified
CVE-2026-39999 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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.. EPSS estimates a 0.39% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Apache | Apisix | >= 2.2, < 3.17.0 |
References
- https://lists.apache.org/thread/nfopt8cnxd3k0rs1oxtr7lzxrdw4mojqVendor Advisory, Mailing List
- https://www.openwall.com/lists/oss-security/2026/06/19/5Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
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