Casablanca, Morocco - Febuary 05, 2026
## PostgreSQL credcheck extension
The credcheck PostgreSQL extension provides few general credential checks,
which will be evaluated during the user creation, during the password change
and user renaming. By using this extension, we can define a set of rules:
* allow a specific set of credentials
* reject a certain type of credentials
* deny password that can be easily cracked
* enforce use of an expiration date with a minimum of day for a password
* define a password reuse policy
* define the number of authentication failure allowed before a user is banned
* define a delay on authentication failures
* force users to change their password after first login
* throw a warning N days before when the password user is about to expire
Release 4.5 has been published, it fixes several issues reported by users since
last release.
- Fix error cannot change data type of view column "roleid" from oid to
regrole.
- Add missing upgrade SQL file from 4.3 to 4.4.
- Fix error when the user want to modify his password and
credcheck.password_valid_until option is set. As we modify
the VALID UNTIL clause it will generate an error message when
the user changes his password:
Only roles with the CREATEROLE attribute and the ADMIN
option on role "..." may alter this role.
- Set the tzp argument in timestamp2tm() call to apply timezone to converted
timestamp.
Upgrade require a PostgreSQL restart to reload the credcheck library.
Complete list of changes and acknowledgements are available
[here](https://github.com/HexaCluster/credcheck/releases/tag/v4.5)
## Links & Credits
credcheck is an open project under the PostgreSQL license maintained by
[HexaCluster](https://github.com/HexaCluster/credcheck/).
Any contribution to build a better tool is welcome. You can send your ideas,
features requests or patches
using the GitHub tools.
**Links :**
* Download:
[https://github.com/HexaCluster/credcheck/releases/](https://github.com/HexaCluster/credcheck/releases/)
* Support: use GitHub report tool at
[https://github.com/HexaCluster/credcheck/issues](https://github.com/HexaCluster/credcheck/issues)
## About credcheck
The credcheck extension is developed and maintained by Gilles Darold at
[https://hexacluster.ai](HexaCluster Corp). If you need more information please
[https://hexacluster.ai/contact-us/](contact us).
Documentation at
[https://github.com/HexaCluster/credcheck#readme](https://github.com/HexaCluster/credcheck#readme)
