oauth2-server (aka node-oauth2-server) through 3.1.1 implements OAuth 2.0 without PKCE.
Priority LOW 37CWE-94Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-94.
Summary
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.
Why it matters now
EPSS 0.0219 82nd percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
| — | oauth2-server (npm) | up to 3.1.1 | — | No fix listed | GHSA-2fw4-mgq9-39cx |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
- oauth2-server (npm) Vendor— Affected up to 3.1.1 Fixed in — No fix listed GHSA-2fw4-mgq9-39cx
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:oauth2-server_project:oauth2-server:*:*:*:*:*:node.js:*:* | up to 3.1.1 | Vulnerable | Oauth2-server Project |
- cpe:2.3:a:oauth2-server_project:oauth2-server:*:*:*:*:*:node.js:*:* Versions up to 3.1.1 Vulnerable ·Oauth2-server Project
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-18924
- 2026-10-03 Alias added: GHSA-2fw4-mgq9-39cx
References
Exploit 2
More Oauth2-server Project Oauth2-server vulnerabilities
- TI-2020-16364 In oauth2-server (aka node-oauth2-server) through 3.1.1, the value of the redirect_uri… CVSS 3.1HIGH 7.2
Sources
- CVE-2017-18924 · CVE Program
- CVE-2017-18924 · NVD
- FIRST EPSS
- GHSA-2fw4-mgq9-39cx · GitHub Advisory Database · CC BY 4.0
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