{"id":"CVE-2026-39999","aliases":["BIT-apisix-2026-39999","EUVD-2026-38013","GHSA-pw26-hvcp-w6vj"],"status":"published","title":"Apache APISIX: JWT Algorithm Confusion allows authentication bypass","description":"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.","severity":{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00635,"percentile":0.50745,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-290"],"published":"2026-06-19T13:07:50Z","modified":"2026-10-28T02:30:28Z","fixes":[{"ecosystem":"Bitnami","package":"apisix","fixed_in":["3.17.0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"apisix","ranges":[{"type":"SEMVER","events":[{"introduced":"2.2.0"},{"fixed":"3.17.0"}]}]}],"products":[{"vendor":"apache","product":"apisix"},{"vendor":"apache software foundation","product":"apache apisix"}],"references":[{"url":"https://lists.apache.org/thread/nfopt8cnxd3k0rs1oxtr7lzxrdw4mojq","tags":["vendor-advisory","Vendor Advisory","Mailing List","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2026/06/19/5","tags":["Third Party Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39999","tags":["web","advisory"]},{"url":"https://github.com/advisories/GHSA-pw26-hvcp-w6vj"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39999.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2026-39999","title":"Apache APISIX: JWT Algorithm Confusion allows authentication bypass","description":"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.","status":"published","published":"2026-06-19T13:07:50.893Z","modified":"2026-06-22T16:17:30.194Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","level":"high","assessor":"cna"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:20:02.290587Z"}],"euvd":[{"id":"EUVD-2026-38013","description":"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.","status":"published","published":"2026-06-19T13:07:50Z","modified":"2026-06-22T16:17:30Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","level":"high"}],"updated_at":"2026-11-02T18:20:34.745289Z"}],"ghsa":[{"id":"GHSA-pw26-hvcp-w6vj","title":"Authentication Bypass by Spoofing vulnerability in Apache APISIX.\n\nThe attacker can completely...","description":"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.","status":"published","published":"2026-06-19T15:33:16Z","modified":"2026-06-23T15:32:31Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T15:08:56.903887Z"}],"nvd":[{"id":"CVE-2026-39999","description":"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.","status":"published","published":"2026-06-19T14:16:21.95Z","modified":"2026-10-25T23:10:00.167Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":9.1,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"critical","assessor":"primary"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T14:12:24.912854Z"}],"osv":[{"id":"CVE-2026-39999","title":"Apache APISIX: JWT Algorithm Confusion allows authentication bypass","description":"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.","status":"published","published":"2026-06-19T13:07:50.893Z","modified":"2026-10-28T02:30:28.373140154Z","cvss":[{"version":"4.0","score":7,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","level":"high"}],"cwes":["CWE-290"],"updated_at":"2026-11-02T15:45:03.040464Z"},{"id":"BIT-apisix-2026-39999","title":"Apache APISIX: JWT Algorithm Confusion allows authentication bypass","description":"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.","status":"published","published":"2026-06-23T14:37:40.966Z","modified":"2026-09-10T16:01:02.604495787Z","updated_at":"2026-11-02T15:28:28.267217Z"}]}}