CVE-2026-41213 — @node-oauth/oauth2-server is a module for implementing an
CVE-2026-41213 — @node-oauth/oauth2-server is a module for implementing an OAuth2 server in Node.js. The token exchange path accepts RFC7636-invalid code_verifier values (including one-character strings) for S256 PKCE flows. Because short/weak verifiers are accepted and failed verifier attempts do n
What This Means For You
- If your environment is affected by CWE-307, CWE-1289, review your exposure and prioritize patching based on your environment. Monitor vendor advisories for CVE-2026-41213 updates and patches.
Related ATT&CK Techniques
🛡️ Detection Rules
3 rules · 6 SIEM formats3 detection rules auto-generated for this incident, mapped to MITRE ATT&CK. Sigma YAML is free — export to any SIEM format via the Intel Bot.
Brute-force of OAuth2 PKCE code_verifier for @node-oauth/oauth2-server — CVE-2026-41213
Indicators of Compromise
| ID | Type | Indicator |
|---|---|---|
| CVE-2026-41213 | vulnerability | CVE-2026-41213 |
| CWE-307 | weakness | CWE-307 |
| CWE-1289 | weakness | CWE-1289 |
Written by SCW Vulnerability Desk
Source & Attribution
| Source Platform | NVD |
| Channel | National Vulnerability Database |
| Published | April 23, 2026 at 22:17 UTC |
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