{"id":"CVE-2020-26136","aliases":["BIT-silverstripe-2020-26136","EUVD-2021-1357","GHSA-mg2g-8pwj-r2j2"],"status":"published","title":"Authentication bypass in SilverStripe GraphQL","description":"In SilverStripe through 4.6.0-rc1, GraphQL doesn't honour MFA (multi-factor authentication) when using basic authentication.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.01157,"percentile":0.6729,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-287","CWE-288"],"published":"2021-06-08T19:37:45Z","modified":"2026-10-24T10:30:53Z","fixes":[{"ecosystem":"Packagist","package":"silverstripe/graphql","fixed_in":["3.5.0","4.0.0-alpha2"],"sources":["ghsa","osv"]},{"ecosystem":"Bitnami","package":"silverstripe","fixed_in":["4.6.0"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"Packagist","package":"silverstripe/graphql","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.5.0"}]}]},{"source":"ghsa","ecosystem":"Packagist","package":"silverstripe/graphql","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0-alpha1"},{"fixed":"4.0.0-alpha2"}]}]},{"source":"osv","ecosystem":"Bitnami","package":"silverstripe","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"4.6.0"}]},{"type":"SEMVER","events":[{"introduced":"4.6.0-rc1"},{"last_affected":"4.6.0-rc1"}]}]},{"source":"osv","ecosystem":"Packagist","package":"silverstripe/graphql","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.0.0"},{"fixed":"3.5.0"}]}],"versions":["3.0.0","3.0.1","3.0.2","3.0.3","3.0.4","3.1.0","3.1.0-rc1","3.1.1","3.1.2","3.1.3","3.1.4","3.1.5","3.2.0","3.2.0-alpha1","3.2.0-rc1","3.2.0-rc2","3.2.1","3.2.2","3.2.3","3.2.4","3.3.0","3.3.0-beta1","3.3.0-rc1","3.4.0","3.4.0-beta1","3.4.0-rc1","3.4.1","3.5.0-beta1","3.5.0-rc1"]},{"source":"osv","ecosystem":"Packagist","package":"silverstripe/graphql","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"4.0.0-alpha1"},{"fixed":"4.0.0-alpha2"}]}],"versions":["4.0.0-alpha1"]}],"products":[{"vendor":"silverstripe","product":"silverstripe"}],"references":[{"url":"https://www.silverstripe.org/download/security-releases/","tags":["x_refsource_MISC","x_transferred","Vendor Advisory","web","advisory"]},{"url":"https://www.silverstripe.org/blog/tag/release","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","web","advisory"]},{"url":"https://forum.silverstripe.org/c/releases","tags":["x_refsource_MISC","x_transferred","Release Notes","Vendor Advisory","web","advisory"]},{"url":"https://www.silverstripe.org/download/security-releases/cve-2020-26136","tags":["x_refsource_MISC","x_transferred","Exploit","Vendor Advisory","web","evidence"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-26136","tags":["advisory"]},{"url":"https://github.com/FriendsOfPHP/security-advisories/blob/master/silverstripe/graphql/CVE-2020-26136.yaml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-mg2g-8pwj-r2j2"},{"url":"https://www.silverstripe.org/download/security-releases","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2020-26136","description":"In SilverStripe through 4.6.0-rc1, GraphQL doesn't honour MFA (multi-factor authentication) when using basic authentication.","status":"published","published":"2021-06-08T19:37:45Z","modified":"2024-08-04T15:49:07.106Z","updated_at":"2026-11-02T14:35:45.763329Z"}],"euvd":[{"id":"EUVD-2021-1357","description":"In SilverStripe through 4.6.0-rc1, GraphQL doesn't honour MFA (multi-factor authentication) when using basic authentication.","status":"published","published":"2021-06-08T19:37:45Z","modified":"2024-08-04T15:49:07Z","updated_at":"2026-11-03T03:07:15.778249Z"}],"ghsa":[{"id":"GHSA-mg2g-8pwj-r2j2","title":"Authentication bypass in SilverStripe GraphQL","description":"The GraphQL module accepts basic-auth as an authentication method by default. This can be used to bypass MFA authentication if the silverstripe/mfa module is installed, which is now a commonly installed module. A users password is still required though.\n\nBasic-auth has been removed as a default authentication method. If desired, it can be re-enabled by adding it to the authenticators key of a schema, or on SilverStripe\\Graphql\\Auth\\Handler","status":"published","published":"2021-06-10T17:21:33Z","modified":"2024-02-07T18:46:46Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-287","CWE-288"],"updated_at":"2026-11-02T14:37:36.777238Z"}],"nvd":[{"id":"CVE-2020-26136","description":"In SilverStripe through 4.6.0-rc1, GraphQL doesn't honour MFA (multi-factor authentication) when using basic authentication.","status":"published","published":"2021-06-08T20:15:08.017Z","modified":"2026-06-17T03:07:39.403Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:N/I:P/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-287"],"updated_at":"2026-11-02T14:06:43.288951Z"}],"osv":[{"id":"CVE-2020-26136","description":"In SilverStripe through 4.6.0-rc1, GraphQL doesn't honour MFA (multi-factor authentication) when using basic authentication.","status":"published","published":"2021-06-08T20:15:08.017Z","modified":"2026-10-24T10:30:53.239124036Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:15.879068Z"},{"id":"GHSA-mg2g-8pwj-r2j2","title":"Authentication bypass in SilverStripe GraphQL","description":"The GraphQL module accepts basic-auth as an authentication method by default. This can be used to bypass MFA authentication if the silverstripe/mfa module is installed, which is now a commonly installed module. A users password is still required though.\n\nBasic-auth has been removed as a default authentication method. If desired, it can be re-enabled by adding it to the authenticators key of a schema, or on SilverStripe\\Graphql\\Auth\\Handler","status":"published","published":"2021-06-10T17:21:33Z","modified":"2024-02-17T05:36:28.183403Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","level":"medium"}],"cwes":["CWE-287","CWE-288"],"updated_at":"2026-11-02T15:46:51.811331Z"},{"id":"BIT-silverstripe-2020-26136","description":"In SilverStripe through 4.6.0-rc1, GraphQL doesn't honour MFA (multi-factor authentication) when using basic authentication.","status":"published","published":"2024-03-06T11:06:42.585Z","modified":"2024-03-06T11:25:28.861Z","updated_at":"2026-11-02T15:28:35.111822Z"}]}}