JWT IdP validation improvements and client_id verification
Fixed JWT IdP token validation to always check exp and iat claims, added client_id verification during code exchange and refresh token flows, and improved JWT IdP audience management and validation.
3.4.12 (2026-06-17)
Bug Fixes
Source: original entry ↗
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v4.19.4 Bug Fixes
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This release fixes three security vulnerabilities including SAML identity-provider confusion leading to account takeover, unsigned Login V2 session cookie vulnerability, and unauthorized administrator impersonation. All 4.x deployments should upgrade and configure the new ZITADEL_SESSION_COOKIE_SECRET for Login V2.