PasswordClass related error when login with Admin after an instance upgrade

2026-10-07 15:19:50,456 [http-nio-1115-exec-8 - http://localhost:1115/xwiki/bin/loginsubmit/XWiki/XWikiLogin] ERROR c.x.x.o.c.PasswordClass        - An outdated algorithm [XWikiLegacy] (or an outdated version of it) is used in a PasswordClass property not yet attached to an object
java.lang.Exception
        at com.xpn.xwiki.objects.classes.PasswordClass.warnAboutOutdatedAlgorithm(PasswordClass.java:473)
        at com.xpn.xwiki.objects.classes.PasswordClass.arePasswordsMatching(PasswordClass.java:443)
        at com.xpn.xwiki.objects.BaseCollection.isPasswordValueMatching(BaseCollection.java:684)
        at com.xpn.xwiki.user.impl.xwiki.XWikiAuthServiceImpl.checkPassword(XWikiAuthServiceImpl.java:450)
        at com.xpn.xwiki.user.impl.xwiki.XWikiAuthServiceImpl.authenticate(XWikiAuthServiceImpl.java:379)
        at org.xwiki.security.authservice.internal.StandardXWikiAuthServiceComponent.authenticate(StandardXWikiAuthServiceComponent.java:81)
        at com.xpn.xwiki.user.impl.xwiki.MyFormAuthenticator.authenticate(MyFormAuthenticator.java:292)
        at com.xpn.xwiki.user.impl.xwiki.MyFormAuthenticator.processLogin(MyFormAuthenticator.java:213)
        at com.xpn.xwiki.user.impl.xwiki.MyFormAuthenticator.processLogin(MyFormAuthenticator.java:195)
        at com.xpn.xwiki.user.impl.xwiki.XWikiAuthServiceImpl.checkAuth(XWikiAuthServiceImpl.java:203)
        at org.xwiki.security.authservice.internal.StandardXWikiAuthServiceComponent.checkAuth(StandardXWikiAuthServiceComponent.java:62)
        at com.xpn.xwiki.XWiki.checkAuth(XWiki.java:4413)
        at org.xwiki.security.authorization.internal.XWikiCachingRightService.authenticateUser(XWikiCachingRightService.java:238)
        at org.xwiki.security.authorization.internal.XWikiCachingRightService.checkAccess(XWikiCachingRightService.java:268)
        at com.xpn.xwiki.XWiki.checkAccess(XWiki.java:4436)
        at com.xpn.xwiki.XWiki.prepareDocuments(XWiki.java:6014)
        at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:548)
        at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:339)
        at com.xpn.xwiki.web.LegacyActionServlet.service(LegacyActionServlet.java:111)
        at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:710)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:132)
        at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:123)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:111)
        at org.xwiki.wysiwyg.filter.ConversionFilter.doFilter(ConversionFilter.java:71)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:111)
        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:59)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:111)
        at org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:66)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:111)
        at org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:135)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:111)
        at org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:240)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:111)
        at org.xwiki.container.servlet.filters.internal.SafeRedirectFilter.doFilter(SafeRedirectFilter.java:106)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:111)
        at org.xwiki.container.servlet.filters.internal.ResolveRelativeRedirectFilter.doFilter(ResolveRelativeRedirectFilter.java:129)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:111)
        at org.xwiki.container.servlet.filters.internal.SourceURLResolverFilter.doFilter(SourceURLResolverFilter.java:177)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:111)
        at org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:120)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:111)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:166)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:77)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:540)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:115)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:86)
        at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:782)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:71)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:347)
        at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
        at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:71)
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:1307)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:2201)
        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:74)
        at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:949)
        at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:483)
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:74)
        at java.base/java.lang.Thread.run(Thread.java:1474)