oauth2-server through 3.1.1 vulnerable to Open Redirect
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 software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | oauth2-server | <= 3.1.1 | no fix |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-26938
- https://github.com/oauthjs/node-oauth2-server/issues/637
- https://github.com/oauthjs/node-oauth2-server
- 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://tools.ietf.org/html/rfc3986#section-3
- https://tools.ietf.org/html/rfc6749#section-3.1.2
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N- Weakness (CWE)
CWE-601- Platform
- npm
- Package
oauth2-server- Disclosed
- 30.08.2022
- Updated
- 11.10.2026 10:22
Sources and licenses
OSV / GitHub Advisory Database - GHSA-4rg6-fm25-gc34 - CC BY 4.0
Vulnerability history: oauth2-server
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 2
- First → latest
- 04.2021 08.2022
- Without a fix
- 2
- Exploited in attacks
- 0
Severity breakdown
- High 2
Disclosures per year
- 2021: 1
- 2022: 1
- 2023: 0
- 2024: 0
- 2025: 0
- 2026: 0
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oauth2-server through 3.1.1 vulnerable to Open Redirect this entry
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