# Which Problems Are Solved
TOTP codes could be reused, violating [RFC 6238, section
5.2](https://datatracker.ietf.org/doc/html/rfc6238#section-5.2).
# How the Problems Are Solved
Transmitted codes are now recorded in each success event. As the codes
amount to secrets, they are not stored verbatim but as a randomly salted
HMAC-SHA256 (`crypto.HMACValue`). Each value gets a fresh random salt,
so an equal code always produces a different stored value and two
entries can never be recognized as being derived from the same code.
This is deliberately not a replacement for proper secret storage: with
the salt stored alongside the hash and a 6 digit payload, anyone with
event access can brute-force the code in milliseconds. That is
acceptable here because a code is worthless once its window has passed.
The `HMACValue` doc comment states the same.
TOTP codes are low-entropy (6 digits), pseudo random codes. Therefore it
is possible for the same code to be generated more than once over the
lifetime of a user. In order to prevent the (unlikely) case where users
login with large time intervalls and a generated code may be equal to
the one last used a long time ago, we only check for codes used within
the recent period window.
A simpler implementation would be simply storing the latest consumed
step, but the TOTP library does not return this value. Because of the
allowed skew there are always 3 steps within the validation window, so
we can't calculate the current step based on time alone. The retained
history spans one period more than the validation window: validity is
decided by the app server's clock, while the stored events carry the
database clock, and the extra period absorbs the drift between them.
**Note:** a reused code pushes a distinct
`user.human.mfa.otp.check.reused` event, not a failed check event. A
replay therefore stays observable through the Events API without
counting towards the lockout policy. Otherwise anyone who captured a
code could replay it to lock the user out.
# Additional Changes
- Read only the latest events in recheck query
# Additional Context
- Closes https://github.com/zitadel/zitadel/issues/6452
---------
Co-authored-by: Livio Spring <[email protected]>
Co-authored-by: Copilot Autofix powered by AI <[email protected]>
Co-authored-by: copilot-swe-agent[bot] <[email protected]>
Co-authored-by: muhlemmer <[email protected]>
* fix: block Login V2 auth for users in deactivated organizations
Enforce organization state on session creation, OIDC token issuance/refresh,
and SAML session creation so deactivated org users cannot authenticate.
Co-authored-by: Cursor <[email protected]>
* fix: reject claim serving for users in deactivated organizations
Require an active resource-owner org in OIDC userinfo and SAML attribute
paths, and use distinct error IDs for inactive user vs inactive org at
token issuance.
Co-authored-by: Cursor <[email protected]>
* fix: drop sessions and tokens when an organization is deactivated
Mirror OrgRemoved cleanup for OrgDeactivated in the V2 session projection
and V1 auth user_session, token, and refresh_token handlers. Also delete
V2 sessions on OrgRemoved, which does not emit per-user removal events.
Co-authored-by: Cursor <[email protected]>
* fix: reject API tokens from deactivated organizations
Check the caller's resource-owner org state in authz middleware via a
cached OrgByID lookup, so already-issued tokens lose ZITADEL API access
when their organization is deactivated. Return unauthenticated (401).
Target org remains unrestricted so instance admins can still manage
deactivated orgs.
Co-authored-by: Cursor <[email protected]>
* fix: invalidate OIDC refresh tokens after org deactivation
Reject refresh exchange if the user's organization was deactivated
after the refresh token was issued, so grants stay dead after reactivate.
Co-authored-by: Cursor <[email protected]>
* fix: invalidate V2 access tokens after org deactivation
Treat OrgDeactivated after the token position as session termination in
ActiveAccessTokenByToken, so issued ATs stay dead after reactivation.
Co-authored-by: Cursor <[email protected]>
---------
Co-authored-by: Cursor <[email protected]>
# Which Problems Are Solved
This PR extends `DeleteProvider` to include Zitadel provider enabling
the deletion of Zitadel IdP.
# How the Problems Are Solved
- Extend org/instance IDP remove write models to include
`ZitadelIDPAddedEvent` in event appends and queries.
- Extend command-side IDP reduction/type handling for Zitadel IDP add
events.
- Add management/admin integration tests for deleting Zitadel providers
- Add error translation key in all language locales for org-level “IDP
config not existing”.
# Additional Changes
N/A
# Additional Context.
Closes https://github.com/zitadel/zitadel/issues/12397
---------
Co-authored-by: Copilot Autofix powered by AI <[email protected]>
Co-authored-by: Livio Spring <[email protected]>
# Which Problems Are Solved
We found multiple cases where potentially a panic occurred or could
occur:
- when de/encrypting certain information
- returning apps without any configuration type (?)
- apple IdPs without a proper private key
# How the Problems Are Solved
- Added nil checks
- Check private key format for apple IdPs
- Added necessary helper function
# Additional Changes
Fixed i18n yaml where the IDP errors were indented under `org` instead
of directly under `errors`.
# Additional Context
- requires backport to v4.x
---------
Co-authored-by: Marco A. <[email protected]>
# Which Problems Are Solved
Currently, metadata can be set/updated only for human users, but it
should be available also for service accounts (machine users).
# How the Problems Are Solved
This is achieved by:
- adding a metadata field at the root level in `CreateUserRequest`,
which makes it available for both `human` and `machine` user types
- returning an error when both the root level and human-level `metadata`
fields are set in the `CreateUserRequest`
- setting `human` and `machine` metadata from the root `metadata` field
in the server layer
- pushing `user.metadata.set` event during machine user creation in the
command layer
- adding integration tests
# Additional Changes
N/A
# Additional Context
- Related to https://github.com/zitadel/zitadel/issues/11369
---------
Co-authored-by: Vitor Bari Buccianti <[email protected]>
Co-authored-by: Silvan <[email protected]>
# Which Problems Are Solved
#11351 renamed IAM to instance. This included also translation keys in
the backend. As most translation files already contained an `Instance`
in the error section, renaming `IAM` to `Instance` on the same level,
results in a duplicate key.
# How the Problems Are Solved
This PR merges the section to remove the duplictes.
# Additional Changes
None
# Additional Context
- relates to #11351
- backport to v4.x
---------
Co-authored-by: Tim Möhlmann <[email protected]>
Co-authored-by: Copilot <[email protected]>
# Which Problems Are Solved
As part of the consistent naming effort, this PR focuses on
"Organization domain".
# How the Problems Are Solved
- All terms referring referring to Organization Domains where changed to
be Organization Domain
# Additional Changes
None
# Additional Context
- closes [#11283](https://github.com/zitadel/zitadel/issues/11283)
---------
Co-authored-by: Copilot <[email protected]>
# Which Problems Are Solved
In many cases IAM was used where instance was meant.
# How the Problems Are Solved
- Rename wrong usage of IAM to instance all over the code base.
- Add an agents.md which explains the terms used in Zitadel's
architecture.
# Additional Context
- closes#11280
---------
Co-authored-by: Copilot <[email protected]>
Co-authored-by: muhlemmer <[email protected]>
Co-authored-by: Copilot <[email protected]>
Co-authored-by: Marco A. <[email protected]>
# Which Problems Are Solved
As part of the consistent naming effort, this PR focuses on "Project
Grants".
# How the Problems Are Solved
All terms referring to a project being granted to another organization
for self-management were changed to "Project Grant" or "project grant".
# Additional Changes
None
# Additional Context
- closes#11287
# Which Problems Are Solved
This PR marks the OAuth2 Token Exchange as general available (GA).
# How the Problems Are Solved
- API:
- deprecated the feature toggle (to prevent breaking changes) in v2beta
and v2 API
- removed all related event logic and updated the projection interation
- removed the toggle usage for token exchange
- removed related translations
- Management Console:
- removed the feature toggle and its translations
- Docs:
- removed all beta labels and feature toggle notes
# Additional Changes
- removed unused `Errors.WebKey.FeatureDisabled` translations
# Additional Context
- closes#11114
---------
Co-authored-by: Marco A. <[email protected]>
## Which Problems Are Solved
- Add comprehensive Arabic language support to ZITADEL
## How the Problems Are Solved
- Added full Arabic translation files for the login UI, console, and
notification (yaml and json).
- Ensured all keys match the latest English reference files to avoid
missing or inconsistent entries.
- Updated the localization loader to include `ar` as a supported
language.
## Additional Changes
## Additional Context
Closes#11146
---------
Co-authored-by: Marco A. <[email protected]>
Wim Van LaerandGitHub
