ilias-admins July 2026

ilias-admins@lists.ilias.de

2 participants
4 discussions

[ILIAS 9] Regression Fix – HTMLPurifier DefinitionCache not writable [Ticket#97294]

by Michael Jansen via Technical Board

Dear administrators, on July 7th the new releases for ILIAS 9 (9.21), ILIAS 10 (10.9) and ILIAS 11 (11.2) were published. The ILIAS 9 branch is a security-fixes only branch as announced in: [1] https://github.com/ILIAS-eLearning/ILIAS/blob/trunk/docs/development/suppor… In this ILIAS 9 release, however, a security fix introduced a severe new bug in the DataCollection component. Saving table/field settings of a Data Collection could fail with "Whoops\Exception\ErrorException: Directory .../vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer not writable", because HTMLPurifier tried to write its definition cache into the (often non-writable) Composer vendor tree. A fix ([2] https://github.com/ILIAS-eLearning/ILIAS/commit/3ec685ebf47d2cd30df0a3b7c86…) was introduced in the release_9 branch after the 9.21 tag, removing this requirement on the vendor directory. Please make sure to checkout the latest commit on the release_9 branch and clear your caches in order to have a secure and stable ILIAS 9 release. If you have any questions, don't hesitate to contact us. Best regards, Michael Im Namen des ILIAS open source e-Learning e.V. --- E-Mail: tb[3] @ilias.de Geschäftsstelle: Berrenrather Str. 177 • 50937 Köln [4] https://verein.ilias.de [1] https://github.com/ILIAS-eLearning/ILIAS/blob/trunk/docs/development/suppor… [2] https://github.com/ILIAS-eLearning/ILIAS/commit/3ec685ebf47d2cd30df0a3b7c86… [3] mailto:wolf@ilias.de [4] https://verein.ilias.de

3 months

ILIAS 11.2 published

by Fabian Wolf

Dear all, We have published release 11.2 on GitHub, see https://github.com/ILIAS-eLearning/ILIAS/releases/tag/v11.2 . Please have a look at the release notes at https://docu.ilias.de/go/pg/225481_35 for more information about this release. This release contains security fixes. For more information, please visit the security blog at https://docu.ilias.de/go/blog/15821/928 . It is recommended to update your software to the latest version. Best regards, Fabian Wolf

3 months, 1 week

ILIAS 10.9 published

by Fabian Wolf

Dear all, We have published release 10.9 on GitHub, see https://github.com/ILIAS-eLearning/ILIAS/releases/tag/v10.9 . Please have a look at the release notes at https://docu.ilias.de/go/pg/225479_35 for more information about this release. This release contains security fixes. For more information, please visit the security blog at https://docu.ilias.de/go/blog/15821/929. It is recommended to update your software to the latest version. Best regards, Fabian Wolf

3 months, 1 week

ILIAS 9.21 published

by Fabian Wolf

Dear all, We have published release 9.21 on GitHub, see https://github.com/ILIAS-eLearning/ILIAS/releases/tag/v9.21 . Please have a look at the release notes at https://docu.ilias.de/go/pg/225478_35 for more information about this release. This release contains security fixes. For more information, please visit the security blog at https://docu.ilias.de/go/blog/15821/930. It is recommended to update your software to the latest version. Best regards, Fabian Wolf

3 months, 1 week

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ilias-admins July 2026