CVE-2026-41213
@node-oauth/oauth2-server is a module for implementing an OAuth2 server in Node.js.
Published Apr 23, 2026 · updated Jun 17, 2026 · node-oauth node-oauth/oauth2-server
@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 not consume the authorization code, an attacker who intercepts an authorization code can brute-force code_verifier guesses online until token issuance succeeds.
Code
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No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Apr 23, 2026 · NIST NVD
Detected
@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 not consume the authorization code, an attacker who intercepts an authorization code can brute-force code_verifier gue
Jun 17, 2026 · NIST NVD
Updated
@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 not consume the authorization code, an attacker who intercepts an authorization code can brute-force code_verifier gue
Affected
- cpe node-oauth/node-oauth/oauth2-serverversion unspecified
Sources
- CVE.orgVulnerability recordCVE-2026-41213
Official CVE identifier
cve.org - NIST NVDVulnerability recordCVE-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 d
nvd.nist.gov