In short
- CVE-2020-26938 is a HIGH (CVSS 7.2) vulnerability affecting oauth2-server (oauth2-server project), oauth2-server.
- Chance of exploitation in the next 30 days (EPSS): 0.99%, higher than 62.6% of all vulnerabilities.
- No patched version is listed yet: follow the vendor's advisory in References.
Description
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.
NVD description
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.
More vulnerabilities in oauth2-server
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