{"affected":[{"affectedData":[{"product":"spnego-http-auth-nginx-module","vendor":"stnoonan","versions":[{"status":"affected","version":"< 1.1.1"}]}],"source":"security-advisories@github.com"}],"configurations":[{"nodes":[{"cpeMatch":[{"criteria":"cpe:2.3:a:spnego_http_authentication_module_project:spnego_http_authentication_module:*:*:*:*:*:nginx:*:*","matchCriteriaId":"89B04778-31B0-41E8-856F-DE883677ED15","versionEndExcluding":"1.1.1","vulnerable":true}],"negate":false,"operator":"OR"}]}],"cveTags":[],"descriptions":[{"lang":"en","value":"In the SPNEGO HTTP Authentication Module for nginx (spnego-http-auth-nginx-module) before version 1.1.1 basic Authentication can be bypassed using a malformed username. This affects users of spnego-http-auth-nginx-module that have enabled basic authentication. This is fixed in version 1.1.1 of spnego-http-auth-nginx-module. As a workaround, one may disable basic authentication."},{"lang":"es","value":"En el módulo de autenticación HTTP SPNEGO para nginx (spnego-http-auth-nginx-module) versiones anteriores a 1.1.1, la Autenticación básica puede ser omitido usando un nombre de usuario malformado.&#xa0;Esto afecta a usuarios de spnego-http-auth-nginx-module que han habilitado la autenticación básica.&#xa0;Esto es corregido en versión 1.1.1 de spnego-http-auth-nginx-module.&#xa0;Como una solución alternativa, puede ser deshabilitar la autenticación básica"}],"id":"CVE-2021-21335","lastModified":"2026-06-17T03:35:19.350","metrics":{"cvssMetricV2":[{"acInsufInfo":false,"baseSeverity":"HIGH","cvssData":{"accessComplexity":"LOW","accessVector":"NETWORK","authentication":"NONE","availabilityImpact":"PARTIAL","baseScore":7.5,"confidentialityImpact":"PARTIAL","integrityImpact":"PARTIAL","vectorString":"AV:N/AC:L/Au:N/C:P/I:P/A:P","version":"2.0"},"exploitabilityScore":10.0,"impactScore":6.4,"obtainAllPrivilege":false,"obtainOtherPrivilege":false,"obtainUserPrivilege":false,"source":"nvd@nist.gov","type":"Primary","userInteractionRequired":false}],"cvssMetricV31":[{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"exploitabilityScore":3.9,"impactScore":1.4,"source":"security-advisories@github.com","type":"Secondary"},{"cvssData":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"exploitabilityScore":3.9,"impactScore":5.9,"source":"nvd@nist.gov","type":"Primary"}]},"published":"2021-03-08T21:15:16.573","references":[{"source":"security-advisories@github.com","tags":["Patch","Third Party Advisory"],"url":"https://github.com/stnoonan/spnego-http-auth-nginx-module/commit/a06f9efca373e25328b1c53639a48decd0854570"},{"source":"security-advisories@github.com","tags":["Third Party Advisory"],"url":"https://github.com/stnoonan/spnego-http-auth-nginx-module/releases/tag/v1.1.1"},{"source":"security-advisories@github.com","tags":["Patch","Third Party Advisory"],"url":"https://github.com/stnoonan/spnego-http-auth-nginx-module/security/advisories/GHSA-ww8q-72rx-hc54"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"],"url":"https://github.com/stnoonan/spnego-http-auth-nginx-module/commit/a06f9efca373e25328b1c53639a48decd0854570"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory"],"url":"https://github.com/stnoonan/spnego-http-auth-nginx-module/releases/tag/v1.1.1"},{"source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Patch","Third Party Advisory"],"url":"https://github.com/stnoonan/spnego-http-auth-nginx-module/security/advisories/GHSA-ww8q-72rx-hc54"}],"sourceIdentifier":"security-advisories@github.com","vulnStatus":"Modified","weaknesses":[{"description":[{"lang":"en","value":"CWE-287"}],"source":"security-advisories@github.com","type":"Secondary"}]}