jwt
Articles tagged with jwt.
Apache CXF CVE-2026-50627: JWT Audience Checks for Keycloak APIs
CVE-2026-50627 let Apache CXF skip the JWT audience claim check. Here is what every resource server must validate on Keycloak…
12 min readJWT sub Claim Explained: Unique Only Per Issuer
The JWT sub claim identifies a user only within one issuer. Why your key must be iss plus sub, why…
8 min readID Token vs Access Token: Differences and How to Validate
An ID token tells your app who signed in; an access token tells an API what the caller may do.…
7 min readCVE-2026-5430: WSO2 JWT Bypass and Your Keycloak APIs
CVE-2026-5430 let forged JWTs past WSO2 API Manager authentication. Here is how you pin algorithms and fail closed on APIs…
12 min readML-DSA Signature Size and the 4 KB Cookie Limit (Keycloak Prep)
ML-DSA signatures run 2,420 to 4,627 bytes against RS256's 256 bytes. The token size math, the 4 KB cookie wall…
10 min read
JWT Token Lifecycle: Expiration, Refresh, and Revocation
JWT lifecycle guide: expiration, refresh token rotation per RFC 9700, Keycloak revocation, and Spring Boot resource server validation with zero…
11 min read
Session Management: Cookies vs Tokens vs Server-Side
Cookies vs tokens vs server-side sessions for distributed systems: security trade-offs, 2026 cookie changes, and how Keycloak persists sessions by…
11 min read
JWKS Explained: JSON Web Key Sets and Keycloak Key Rotation
Learn what JWKS means, how to verify JWT signatures safely, and how to rotate Keycloak signing keys with overlap while…
13 min read
How to Verify a Keycloak Access Token on the Backend
Verify Keycloak access tokens on your backend: local JWT signature checks with JWKS, token introspection, claim validation, and Java, Node,…
11 min readKeycloak 'Token Not Active' Clock Skew: How to Fix
Fix Keycloak 'token is not active' and 'JWT issued in the future' errors caused by clock skew: sync server time…
7 min readStay ahead on identity & security
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