CVE-2020-26938
- Source
- https://nvd.nist.gov/vuln/detail/CVE-2020-26938
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-26938.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2020-26938
- Aliases
- Published
- 2022-08-29T21:15:08Z
- Modified
- 2025-01-14T08:42:02.929344Z
- Severity
-
- 7.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N CVSS Calculator
- Summary
- [none]
- Details
-
In oauth2-server (aka node-oauth2-server) through 3.1.1, the value of the redirecturi 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 redirecturi parameter while making an authorization request. NOTE: this vulnerability is similar to CVE-2020-7741.
- References
-
- 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