v4.16.2 Bug Fixes and Performance Improvements
This release includes critical security fixes for login flows including prevention of external-IDP account hijacking and required authentication before enrollment, plus improvements to random string generation and ListUsers query performance.
4.16.2 (2026-07-29)
Bug Fixes
- improve random string generation (#12266) (34345ea)
- login: prevent external-IDP account pre-hijack in Login V1 (917ade3)
- login: redirect to external IdP after domain discovery regardless of registration policy (#12369) (c4ba5a1), closes #12021 #12023
- login: require authentication before WebAuthn/U2F and TOTP/OTP enrollment (c20d613)
- use protected http client for org domain HTTP verification (35122e4)
Performance Improvements
Source: original entry ↗
More from ZITADEL
Follow ZITADEL to get its new changes in your feed and email digest.
v4.19.4 Bug Fixes
This release includes bug fixes for the async execution worker context not having the instance ID set, corrects the ID order in the invite code notification handler, and improves handling of finalized unique-constraint backfill and exclusive owner deletes.
Performance improvements for user queries
Improved performance of user listing queries by indexing users by instance and organization, and stopped expanding login names for every ListUsers row to reduce database load.
v4.19.2 – Security fixes for SAML, session cookies, and impersonation
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.