{"id":"CVE-2017-18924","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-18924","generatedAt":"2026-10-28T19:02:29.539Z","title":"It does not prevent authorization code injection.","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.","published":"2020-10-04T05:15:12.000Z","lastModified":"2026-06-17T01:13:51.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-94"],"affected":["oauth2-server project/oauth2-server"],"epss":{"score":0.0219,"percentile":0.82339,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (2.19%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://codeburst.io/missing-the-point-in-securing-oauth-2-0-83968708b467","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/oauthjs/node-oauth2-server/issues/637","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://github.com/oauthjs/node-oauth2-server/pull/452","tags":["Patch","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://tools.ietf.org/html/draft-ietf-oauth-security-topics-15","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://tools.ietf.org/html/rfc7636","tags":["Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://codeburst.io/missing-the-point-in-securing-oauth-2-0-83968708b467","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/oauthjs/node-oauth2-server/issues/637","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://github.com/oauthjs/node-oauth2-server/pull/452","tags":["Patch","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://tools.ietf.org/html/draft-ietf-oauth-security-topics-15","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://tools.ietf.org/html/rfc7636","tags":["Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-18924","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}