{"id":"CVE-2017-18924","aliases":["EUVD-2021-0738","GHSA-2fw4-mgq9-39cx"],"status":"disputed","title":"Code Injection in oauth2-server","description":"oauth2-server (aka node-oauth2-server) through 3.1.1 implements OAuth 2.0 without PKCE. It does not prevent authorization code injection. This is similar to CVE-2020-7692. NOTE: the vendor states 'As RFC7636 is an extension, I think the claim in the Readme of \"RFC 6749 compliant\" is valid and not misleading and I also therefore wouldn't describe this as a \"vulnerability\" with the library per se.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-07","score":0.0219,"percentile":0.82543,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-94"],"published":"2020-10-04T04:38:47Z","modified":"2026-10-20T10:48:18Z","affected":[{"source":"ghsa","ecosystem":"npm","package":"oauth2-server","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"last_affected":"3.1.1"}]}]},{"source":"osv","ecosystem":"npm","package":"oauth2-server","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"last_affected":"3.1.1"}]}]}],"products":[{"vendor":"oauth2-server_project","product":"oauth2-server"}],"references":[{"url":"https://tools.ietf.org/html/rfc7636","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://tools.ietf.org/html/draft-ietf-oauth-security-topics-15","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web"]},{"url":"https://codeburst.io/missing-the-point-in-securing-oauth-2-0-83968708b467","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","advisory","web"]},{"url":"https://github.com/oauthjs/node-oauth2-server/issues/637","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory","evidence","web"]},{"url":"https://github.com/oauthjs/node-oauth2-server/pull/452","tags":["x_refsource_MISC","x_transferred","Patch","Third Party Advisory","fix","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-18924","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-2fw4-mgq9-39cx"}],"sources":{"cve":[{"id":"CVE-2017-18924","description":"oauth2-server (aka node-oauth2-server) through 3.1.1 implements OAuth 2.0 without PKCE. It does not prevent authorization code injection. This is similar to CVE-2020-7692. NOTE: the vendor states 'As RFC7636 is an extension, I think the claim in the Readme of \"RFC 6749 compliant\" is valid and not misleading and I also therefore wouldn't describe this as a \"vulnerability\" with the library per se.","status":"disputed","published":"2020-10-04T04:38:47Z","modified":"2024-08-05T21:45:24.546Z","updated_at":"2026-11-02T14:33:22.064284Z"}],"euvd":[{"id":"EUVD-2021-0738","description":"oauth2-server (aka node-oauth2-server) through 3.1.1 implements OAuth 2.0 without PKCE. It does not prevent authorization code injection. This is similar to CVE-2020-7692. NOTE: the vendor states 'As RFC7636 is an extension, I think the claim in the Readme of \"RFC 6749 compliant\" is valid and not misleading and I also therefore wouldn't describe this as a \"vulnerability\" with the library per se.","status":"published","published":"2020-10-04T04:38:47Z","modified":"2024-08-05T21:45:24Z","updated_at":"2026-11-03T02:23:04.143753Z"}],"ghsa":[{"id":"GHSA-2fw4-mgq9-39cx","title":"Code Injection in oauth2-server","description":"\"oauth2-server (aka node-oauth2-server) through 3.1.1 implements OAuth 2.0 without PKCE. It does not prevent authorization code injection. This is similar to CVE-2020-7692. NOTE: the vendor states 'As RFC7636 is an extension, I think the claim in the Readme of \"RFC 6749 compliant\" is valid and not misleading and I also therefore wouldn't describe this as a \"vulnerability\" with the library per se.'\"","status":"published","published":"2021-04-22T15:53:45Z","modified":"2023-02-01T05:05:29Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:36:34.260786Z"}],"nvd":[{"id":"CVE-2017-18924","description":"oauth2-server (aka node-oauth2-server) through 3.1.1 implements OAuth 2.0 without PKCE. It does not prevent authorization code injection. This is similar to CVE-2020-7692. NOTE: the vendor states 'As RFC7636 is an extension, I think the claim in the Readme of \"RFC 6749 compliant\" is valid and not misleading and I also therefore wouldn't describe this as a \"vulnerability\" with the library per se.","status":"disputed","published":"2020-10-04T05:15:12.14Z","modified":"2026-06-17T01:13:50.523Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high","assessor":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:04:21.160774Z"}],"osv":[{"id":"CVE-2017-18924","description":"oauth2-server (aka node-oauth2-server) through 3.1.1 implements OAuth 2.0 without PKCE. It does not prevent authorization code injection. This is similar to CVE-2020-7692. NOTE: the vendor states 'As RFC7636 is an extension, I think the claim in the Readme of \"RFC 6749 compliant\" is valid and not misleading and I also therefore wouldn't describe this as a \"vulnerability\" with the library per se.","status":"published","published":"2020-10-04T05:15:12.14Z","modified":"2026-10-20T10:48:18.841255873Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:44:05.486486Z"},{"id":"GHSA-2fw4-mgq9-39cx","title":"Code Injection in oauth2-server","description":"\"oauth2-server (aka node-oauth2-server) through 3.1.1 implements OAuth 2.0 without PKCE. It does not prevent authorization code injection. This is similar to CVE-2020-7692. NOTE: the vendor states 'As RFC7636 is an extension, I think the claim in the Readme of \"RFC 6749 compliant\" is valid and not misleading and I also therefore wouldn't describe this as a \"vulnerability\" with the library per se.'\"","status":"published","published":"2021-04-22T15:53:45Z","modified":"2023-11-08T03:59:16.711691Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T15:46:34.338541Z"}]}}