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.
References (5)
Core 5
Core References
Third Party Advisory x_refsource_misc
https://tools.ietf.org/html/rfc7636
Exploit, Third Party Advisory x_refsource_misc
https://tools.ietf.org/html/draft-ietf-oauth-security-topics-15
Third Party Advisory x_refsource_misc
https://codeburst.io/missing-the-point-in-securing-oauth-2-0-83968708b467
Exploit, Third Party Advisory x_refsource_misc
https://github.com/oauthjs/node-oauth2-server/issues/637
Patch, Third Party Advisory x_refsource_misc
https://github.com/oauthjs/node-oauth2-server/pull/452
Scores
CVSS v3
7.5
EPSS
0.0219
EPSS Percentile
80.2%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Details
CWE
CWE-94
Status
published
Products (2)
npm/oauth2-server
0npm
oauth2-server_project/oauth2-server
< 3.1.1
Published
Oct 04, 2020
Tracked Since
Feb 18, 2026