{"id":"CVE-2018-15801","aliases":["EUVD-2018-0791","GHSA-27xw-p8v6-9jjr"],"status":"published","title":"Authorization Bypass During JWT Issuer Validation with spring-security","description":"Spring Security versions 5.1.x prior to 5.1.2 contain an authorization bypass vulnerability during JWT issuer validation. In order to be impacted, the same private key for an honest issuer and a malicious user must be used when signing JWTs. In that case, a malicious user could fashion signed JWTs with the malicious issuer URL that may be granted for the honest issuer.","severity":{"version":"3.0","score":3.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-08","score":0.00653,"percentile":0.51547,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-345"],"published":"2018-12-19T22:00:00Z","modified":"2026-10-24T10:30:50Z","fixes":[{"ecosystem":"Maven","package":"org.springframework.security:spring-security-core","fixed_in":["5.1.2"],"sources":["ghsa","osv"]},{"ecosystem":"Maven","package":"org.springframework.security:spring-security-oauth2-jose","fixed_in":["5.1.2"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Maven","package":"org.springframework.security:spring-security-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.1.0"},{"fixed":"5.1.2"}]}]},{"source":"ghsa","ecosystem":"Maven","package":"org.springframework.security:spring-security-oauth2-jose","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.1.0"},{"fixed":"5.1.2"}]}]},{"source":"osv","ecosystem":"Maven","package":"org.springframework.security:spring-security-core","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.1.0"},{"fixed":"5.1.2"}]}],"versions":["5.1.0.RELEASE","5.1.1.RELEASE"]},{"source":"osv","ecosystem":"Maven","package":"org.springframework.security:spring-security-oauth2-jose","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.1.0"},{"fixed":"5.1.2"}]}],"versions":["5.1.0.RELEASE","5.1.1.RELEASE"]}],"products":[{"vendor":"spring","product":"spring security"},{"vendor":"spring by pivotal","product":"spring security"},{"vendor":"vmware","product":"spring_framework"}],"references":[{"url":"https://pivotal.io/security/cve-2018-15801","tags":["x_refsource_CONFIRM","x_transferred","Vendor Advisory","advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2018-15801","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-27xw-p8v6-9jjr","tags":["advisory"]},{"url":"https://github.com/spring-projects/spring-security/commit/c70b65c5df0e170a2d34d812b83db0b7bc71ea25","tags":["web"]},{"url":"https://github.com/spring-projects/spring-security","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2018-15801","title":"Authorization Bypass During JWT Issuer Validation with spring-security","description":"Spring Security versions 5.1.x prior to 5.1.2 contain an authorization bypass vulnerability during JWT issuer validation. In order to be impacted, the same private key for an honest issuer and a malicious user must be used when signing JWTs. In that case, a malicious user could fashion signed JWTs with the malicious issuer URL that may be granted for the honest issuer.","status":"published","published":"2018-12-19T22:00:00Z","modified":"2024-09-16T18:43:45.437Z","cvss":[{"version":"3.0","score":3.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"cna"}],"updated_at":"2026-11-02T14:35:03.288698Z"}],"euvd":[{"id":"EUVD-2018-0791","description":"Spring Security versions 5.1.x prior to 5.1.2 contain an authorization bypass vulnerability during JWT issuer validation. In order to be impacted, the same private key for an honest issuer and a malicious user must be used when signing JWTs. In that case, a malicious user could fashion signed JWTs with the malicious issuer URL that may be granted for the honest issuer.","status":"published","published":"2018-12-19T22:00:00Z","modified":"2024-09-16T18:43:45Z","cvss":[{"version":"3.0","score":3.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low"}],"updated_at":"2026-11-03T00:55:29.674428Z"}],"ghsa":[{"id":"GHSA-27xw-p8v6-9jjr","title":"Spring Security vulnerable to Authorization Bypass","description":"Spring Security versions 5.1.x prior to 5.1.2 contain an authorization bypass vulnerability during JWT issuer validation. In order to be impacted, the same private key for an honest issuer and a malicious user must be used when signing JWTs. In that case, a malicious user could fashion signed JWTs with the malicious issuer URL that may be granted for the honest issuer.","status":"published","published":"2018-12-20T22:01:31Z","modified":"2024-03-14T21:02:35Z","cvss":[{"version":"3.0","score":7.4,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T14:37:40.81935Z"}],"nvd":[{"id":"CVE-2018-15801","description":"Spring Security versions 5.1.x prior to 5.1.2 contain an authorization bypass vulnerability during JWT issuer validation. In order to be impacted, the same private key for an honest issuer and a malicious user must be used when signing JWTs. In that case, a malicious user could fashion signed JWTs with the malicious issuer URL that may be granted for the honest issuer.","status":"published","published":"2018-12-19T22:29:00.593Z","modified":"2026-06-17T01:43:07.673Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high","assessor":"primary"},{"version":"3.0","score":3.3,"vector":"CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:N","level":"low","assessor":"secondary"},{"version":"2.0","score":5.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T14:04:50.99633Z"}],"osv":[{"id":"CVE-2018-15801","description":"Spring Security versions 5.1.x prior to 5.1.2 contain an authorization bypass vulnerability during JWT issuer validation. In order to be impacted, the same private key for an honest issuer and a malicious user must be used when signing JWTs. In that case, a malicious user could fashion signed JWTs with the malicious issuer URL that may be granted for the honest issuer.","status":"published","published":"2018-12-19T22:29:00.593Z","modified":"2026-10-24T10:30:50.969392314Z","cvss":[{"version":"3.1","score":7.4,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:08.242347Z"},{"id":"GHSA-27xw-p8v6-9jjr","title":"Spring Security vulnerable to Authorization Bypass","description":"Spring Security versions 5.1.x prior to 5.1.2 contain an authorization bypass vulnerability during JWT issuer validation. In order to be impacted, the same private key for an honest issuer and a malicious user must be used when signing JWTs. In that case, a malicious user could fashion signed JWTs with the malicious issuer URL that may be granted for the honest issuer.","status":"published","published":"2018-12-20T22:01:31Z","modified":"2024-03-14T21:16:03.663372Z","cvss":[{"version":"3.0","score":7.4,"vector":"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N","level":"high"}],"cwes":["CWE-345"],"updated_at":"2026-11-02T15:46:33.956911Z"}]}}