Release Notes for XWiki 15.5.2

Last modified by Ilie Andriuta on 2023/10/16

This is the release notes for XWiki Commons, XWiki Rendering and XWiki Platform. They share the same release notes as they are released together and have the same version.

This is a bug fix version, fixing important issues including critical security vulnerabilities discovered since XWiki 15.5.1 has been released.

New and Noteworthy (since XWiki 15.5.1)

Full list of issues fixed and Dashboard for 15.5.2.


The following translations have been updated: 

Tested Browsers & Databases

Here is the list of browsers we support and how they have been tested for this release:

 BrowserTested on:
Firefox30.pngMozilla Firefox 116Not Tested
Chrome30.pngGoogle Chrome 116Tests run and results
Edge30.pngMicrosoft Edge 116Jira Tickets Marked as Fixed in the Release Notes
Safari30.pngSafari 16Not Tested

Here is the list of databases we support and how they have been tested for this release:

 DatabaseTested on:
hypersql.pngHyperSQL 2.7.2Not Tested
mariadb.pngMariaDB 11.0Jira Tickets Marked as Fixed in the Release Notes
mysql.pngMySQL 8Not Tested
postgresql.pngPostgreSQL 15Tests run and results
oracle.pngOracle 19cNot Tested

Here is the list of Servlet Containers we support and how they have been tested for this release:

 Servlet ContainerTested on:
tomcat-icon.pngTomcat 9.0.80
jetty-icon.pngJetty 10.0.12 (XWiki Standalone packaging)Not Tested
jetty-icon.pngJetty 10.0.12Not Tested

Security Issues

Security issues are not listed in issue lists or dashboards to avoid disclosing ways to use them, but they will appear automatically in them once they're disclosed. See the XWiki Security Policy for more details.

Known issues

Backward Compatibility and Migration Notes

General Notes

  • When upgrading make sure you compare and merge the following XWiki configuration files since some parameters may have been modified, removed or added:
    • xwiki.cfg
    • web.xml
    • hibernate.cfg.xml
  • Add in xwiki.cfg so that XWiki will attempt to automatically migrate your current database to any new schema. Make sure you backup your Database before doing anything.

Issues specific to XWiki 15.5.2

On startup after the upgrade, the search index will be emptied and all documents will be re-indexed to purge sensitive data from the search index. Features relying on the search index like the search itself but also the image picker or backlinks might be temporarily unavailable or incomplete.

API Breakages

The following APIs were modified since XWiki 15.5.1:

Real breakages

Real backward compatibility breakages that we have unwillingly accepted to do for the reasons mentioned in each violation below.

  • Moved to internal where this class should have been from the beginning.
    • Violation type:
    • Code:
      ## Old:
      class org.xwiki.index.migration.R140300000XWIKI19614DataMigration

Unstable APIs

Not real backward compatibility breakages since they were done on APIs marked @Unstable (a.k.a Young APIs). Thus it's part of the contract that they can be broken until they become stable. They're listed purely for reference in case you decided to still use them (and thus agreed to be broken).

  • Replaced getXWikiHost() with getXWikiURI() in unstable configuration API.
    • Violation type:
    • Code:
      ## Old:
      method java.lang.String org.xwiki.export.pdf.PDFExportConfiguration::getXWikiHost()
  • Replaced getXWikiHost() with getXWikiURI() in unstable configuration API.
    • Violation type:
    • Code:
      ## Old:

      ## New:
      method org.xwiki.export.pdf.PDFExportConfiguration::getXWikiURI() throws


The following people have contributed code and translations to this release (sorted alphabetically):

  • Anca Luca
  • ClĂ©ment Aubin
  • Dorian OUAKLI
  • Gankov Andrey
  • Manuel Leduc
  • Marius Dumitru Florea
  • Michael Hamann
  • Nikita Petrenko
  • Sereza7
  • Simon Urli
  • Simpel
  • Thomas Mortagne
  • Vincent Massol
  • WestFarmer

Get Connected