Download & Releases
9.21 (stable)
General Information
Release 9.21 has been published on July 7, 2026
- Please read the ILIAS 9 feature page for information about new and abandoned features and changed behaviour of this version.
- You find information about first time installation of ILIAS 9 and updating here.
- Please also have a look at the Required Software for ILIAS 9 page.
ILIAS is free, open source software and published under the GNU General Public License (GPL), version 3.0 → Licence
Download
ILIAS-9.21.zip
Download (github.com)160 MB, 2026-07-07md5: 6126db5be1f113cb950b9bce2ea79a8a
ILIAS-9.21.tar.gz
Download (github.com)145 MB, 2026-07-07md5: c38e5a299886c30fcada66ab95e390c4
Important Changes
- System Styles: Custom system styles from 8 and earlier do no longer work
- With ILIAS 9 the SCSS has been restructered according to the ITCSS structure suggested in the SASS guidelines. In addition, the depencency to less from Bootstrap has mostly been removed. However, the change from less to SCSS and the abandonment from Bootstrap means, that System Styles from 8 and lower are NOT compatible with ILIAS 9. They cannot be imported, be used, or compiled.
- However, note, that most of the css should still work. Also less and scss are not that far appart. Best read through our SCSS Coding Guidelines to get started.
- JavaScript Dependencies: Removal of 'node_modules' folder from Git repository
- The 'npm' dependencies and thus the 'node_modules' folder in the ILIAS root directory were removed from the ILIAS codebase.
- All 'npm' dependencies will still be automatically added to the release builds (linked on the official ILIAS release pages) on GitHub.
- With this change 'npm' will become a requirement for ILIAS installations based on Git branches/tags. To install the 'npm' dependencies on such installations, you'll have to execute:
npm clean-install --omit=dev --ignore-scripts - The
--omit=devflag can be ignored for development installations.
- Chat Server: Removal of 'node_modules' folder from Git repository
- The 'npm' dependencies and thus the 'node_modules' folder of 'Modules/Chatroom/chat' were removed from the ILIAS codebase in Git with the integration of PR 5128.
- All 'npm' dependencies will still be automatically added to the release builds (linked on the official ILIAS release pages) on GitHub.
- With this change 'npm' will become a requirement for ILIAS installations based on Git branches/tags. To install the 'npm' dependencies on such installations, you'll have to execute:
npm clean-install --omit=dev --ignore-scripts
The--omit=devflag can be ignored for development installations.
- Cron Jobs:
- With ILIAS ≧ 9.x and the application of PR 5720 the password must be omitted when executing the ILIAS cron CLI script, see also Installation and Maintenance: Cron Jobs.
- PDF Generation:
wkhtmltopdfhas been removed from the code base.
- Authentication/SAML:
- Due to an major release upgrade of the underlying 3rd party library, existing configuration files for SimpleSAMLphp have to be adopted according to the documention.
- Furthermore, existing federations between ILIAS and SAML IPDs have to re-established due to necessary changes in the metadata XML file.
- When installing the composer dependencies on an existing installation, it might occur that you receive an error caused by the simplesamlphp/simplesamlphp library. In this case, simply remove the vendor folder once by executing: rm -rf ./libs/composer/vendor . Afterwards, install the composer dependencies as usual.
- MathJax:
- Please check if you configured a polyfill url at Administration » Third Party Software » MathJax. This is not needed by modern browsers and IE 11 is no longer supported by ILIAS at all. You should NOT use the polyfill.io library any longer, see https://sansec.io/research/polyfill-supply-chain-attack for details.
Known Issues
- none
Changed Behaviour
- Test & Assessment: Import of Tests with Results: It is no longer possible to deselect questions during the import.
- Test & Assessment: Filter "Active Users only" / "Inactive Users only" in Manual Scoring is removed.
- Test & Assessment: "Auto-saved" or intermediate answers are not saved anymore as authorised answers when the set test duration limit ends.
- Test & Assessment: Zero will no longer be accepted as value for points in File Upload Questions.
- Test & Assessnment: The redirect after finishing the test does only work if the participant does not have access to his test results. The info for this setting stated this, but until this bug fix with 44025, the redirect always "wins." 44025 was fixed with ILIAS 9.8, but many institutions are upgrading now to ILIAS 9. So we decided to document this bug fix nevertheless within Changed behavior.
- Test & Assessment: Redirect: Starting with Version 9.15, we introduce a separate option to redirect to the logout screen, as redirecting to https://instance.url/logout.php does not work anymore since ILIAS 9.13.
- Learning Sequence: With ILIAS 9.15 an ambigousness within the Online Status of Learning Sequences was fixed. Due to the resolvement of this corrupt state certain Learning Sequences that apperently seemed online are correctly portait offline. Affected are all Copies of Learning Sequences there where included in a container copy process and not accessed since then until the release of ILIAS 9.15
- Mediacast: With version 9.17 the autoplay feature has been removed, see Mantis issue 38134.
Updated Languages
- Update of Japanese language support, thanks to Shiro Tamoto from Nagaoka University of Technology
Security Fixes
The following security issues have been fixed. For more information about these vulnerabilities, see our 9.21 security blog post.
#47954: [Notes] Notes: Insufficient access checks
#46642: [Data Collection] Data Collection: Stored XSS with TinyMCE
#47952: [¥ Object] Object: Remove Information on Temp File Location from Error Message
#47887: [SOAP & Webservices] SOAP: Insecure Direct Object Reference (IDOR)
#47800: [Course Management] Stored XSS via HTML attribute injection (André Schweigert ( FAU | ILIAS ))
#47834: [Category and Repository] Add RBAC check for Repository Objects (Franziska Senze)