high7.2
CVE-2020-26938
oauth2-server through 3.1.1 vulnerable to Open Redirect
Impact
In oauth2-server (aka node-oauth2-server) through 3.1.1, the value of the `redirect_uri` parameter received during the authorization and token request is checked against an incorrect URI pattern (`[a-zA-Z][a-zA-Z0-9+.-]+:`) before making a redirection. This allows a malicious client to pass an XSS payload through the redirect_uri parameter while making an authorization request. NOTE: this vulnerability is similar to CVE-2020-7741.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| npm | oauth2-server | <= 3.1.1 | none recorded |
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Oauth2-Server Project | Oauth2-Server | through 3.1.1 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/oauthjs/node-oauth2-server/blob/91d2cbe70a0eddc53d72def96864e2de0fd41703/lib/grant-types/authorization-code-grant-type.js#L143
- https://github.com/oauthjs/node-oauth2-server/blob/91d2cbe70a0eddc53d72def96864e2de0fd41703/lib/validator/is.js#L12
- https://github.com/oauthjs/node-oauth2-server/issues/637
- https://tools.ietf.org/html/rfc3986#section-3
- https://tools.ietf.org/html/rfc6749#section-3.1.2
- https://github.com/advisories/GHSA-4rg6-fm25-gc34
- https://nvd.nist.gov/vuln/detail/CVE-2020-26938