{"id":"CVE-2026-94276","aliases":["BIT-apisix-2026-94276","EUVD-2026-90769","GHSA-9v5j-4cf2-q593"],"status":"published","title":"Apache APISIX: Openid-connect introspection validation issue","description":"Improper Authentication vulnerability in Apache APISIX.\n\nOn a route using openid-connect plugin with remote introspection against an authorization server that serves multiple issuers, a token that introspects as active for one issuer may get accepted on a route restricted to another. This issue affects Apache APISIX: from 3.12.0 through 3.18.0.\n\nUsers are recommended to upgrade to version 3.19.0, which fixes the issue.","severity":{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00334,"percentile":0.27126,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287"],"published":"2026-10-01T11:02:36Z","modified":"2026-10-09T12:00:08Z","fixes":[{"ecosystem":"Bitnami","package":"apisix","fixed_in":["3.19.0"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Bitnami","package":"apisix","ranges":[{"type":"SEMVER","events":[{"introduced":"3.12.0"},{"fixed":"3.19.0"}]}]}],"products":[{"vendor":"apache software foundation","product":"apache apisix"}],"references":[{"url":"https://lists.apache.org/thread.html/txn3br25kl657fh15rwcy1oht1xbpyyk","tags":["vendor-advisory","web"]},{"url":"http://www.openwall.com/lists/oss-security/2026/10/01/8","tags":["web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-94276","tags":["web"]},{"url":"https://github.com/advisories/GHSA-9v5j-4cf2-q593"}],"sources":{"cve":[{"id":"CVE-2026-94276","title":"Apache APISIX: Openid-connect introspection validation issue","description":"Improper Authentication vulnerability in Apache APISIX.\n\nOn a route using openid-connect plugin with remote introspection against an authorization server that serves multiple issuers, a token that introspects as active for one issuer may get accepted on a route restricted to another. This issue affects Apache APISIX: from 3.12.0 through 3.18.0.\n\nUsers are recommended to upgrade to version 3.19.0, which fixes the issue.","status":"published","published":"2026-10-01T11:02:36.855Z","modified":"2026-10-01T14:44:30.267Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N","level":"medium","assessor":"cna"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:19:54.122945Z"}],"euvd":[{"id":"EUVD-2026-90769","description":"Improper Authentication vulnerability in Apache APISIX.\n\nOn a route using openid-connect plugin with remote introspection against an authorization server that serves multiple issuers, a token that introspects as active for one issuer may get accepted on a route restricted to another. This issue affects Apache APISIX: from 3.12.0 through 3.18.0.\n\nUsers are recommended to upgrade to version 3.19.0, which fixes the issue.","status":"published","published":"2026-10-01T11:02:36Z","modified":"2026-10-01T14:44:30Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/SA:N","level":"medium"}],"updated_at":"2026-11-02T17:27:45.695512Z"}],"ghsa":[{"id":"GHSA-9v5j-4cf2-q593","title":"Improper Authentication vulnerability in Apache APISIX.\n\nOn a route using openid-connect plugin...","description":"Improper Authentication vulnerability in Apache APISIX.\n\nOn a route using openid-connect plugin with remote introspection against an authorization server that serves multiple issuers, a token that introspects as active for one issuer may get accepted on a route restricted to another. This issue affects Apache APISIX: from 3.12.0 through 3.18.0.\n\nUsers are recommended to upgrade to version 3.19.0, which fixes the issue.","status":"published","published":"2026-10-01T12:31:21Z","modified":"2026-10-01T15:30:40Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/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":"medium"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T15:12:40.571849Z"}],"nvd":[{"id":"CVE-2026-94276","description":"Improper Authentication vulnerability in Apache APISIX.\n\nOn a route using openid-connect plugin with remote introspection against an authorization server that serves multiple issuers, a token that introspects as active for one issuer may get accepted on a route restricted to another. This issue affects Apache APISIX: from 3.12.0 through 3.18.0.\n\nUsers are recommended to upgrade to version 3.19.0, which fixes the issue.","status":"published","published":"2026-10-01T12:17:17.347Z","modified":"2026-10-01T15:17:36.58Z","cvss":[{"version":"4.0","score":5.1,"vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:L/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":"medium","assessor":"secondary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:12:53.41762Z"}],"osv":[{"id":"BIT-apisix-2026-94276","title":"Apache APISIX: Openid-connect introspection validation issue","description":"Improper Authentication vulnerability in Apache APISIX.\n\nOn a route using openid-connect plugin with remote introspection against an authorization server that serves multiple issuers, a token that introspects as active for one issuer may get accepted on a route restricted to another. This issue affects Apache APISIX: from 3.12.0 through 3.18.0.\n\nUsers are recommended to upgrade to version 3.19.0, which fixes the issue.","status":"published","published":"2026-10-09T10:43:51.802Z","modified":"2026-10-09T12:00:08.202060202Z","updated_at":"2026-11-02T15:28:28.267217Z"}]}}