{"schema_version": "1.6.1", "id": "CVE-2026-39999", "summary": "JWT Algorithm Confusion allows authentication bypass", "details": "Authentication Bypass by Spoofing vulnerability in Apache APISIX.\n\nThe attacker can completely bypass authentication capitalising on certain configurations of jwt-auth plugin.\nThis issue affects Apache APISIX: from v2.2 through v3.16.0.\n\nUsers are recommended to upgrade to version v3.17.0, which fixes the issue.", "affected": [{"ranges": [{"type": "SEMVER", "events": [{"introduced": "2.2"}, {"last_affected": "2.2"}]}]}], "references": [{"type": "WEB", "url": "https://lists.apache.org/thread/nfopt8cnxd3k0rs1oxtr7lzxrdw4mojq"}]}