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Error with filtered LDAP group objects #5560
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Originally created by @dhimler on GitHub (Jan 2, 2026).
Describe the Bug
Hello!
I stumbled about a bug that will probably hit only a subset of users, but I thought I report it anyways. Our Active Directory is running in "List Object Mode" (https://docs.microsoft.com/en-us/previous-versions/dd308984(v=technet.10)), which changes the behavior of Active Directory and allows to hide objects, which we do to hide different customers from each other. So the service account that we use to access Active Directory via LDAP from BookStack is not being able to resolve ALL the groups that the users are member of, but only the ones that are relevant.
When using the following parameters in .env, the application fails to let users log in:
LDAP_USER_TO_GROUPS=true
LDAP_GROUP_ATTRIBUTE="memberOf"
It tries to resolve all of the groups referenced under "memberOf" and fails as soon as it hits the first it has no access to.
#0 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Bootstrap/HandleExceptions.php(258): Illuminate\Foundation\Bootstrap\HandleExceptions->handleError()
#1 [internal function]: Illuminate\Foundation\Bootstrap\HandleExceptions->Illuminate\Foundation\Bootstrap\{closure}()
#2 /opt/bookstack/app/Access/Ldap.php(71): ldap_read()
#3 /opt/bookstack/app/Access/LdapService.php(417): BookStack\Access\Ldap->read()
#4 /opt/bookstack/app/Access/LdapService.php(392): BookStack\Access\LdapService->getParentsOfGroup()
#5 /opt/bookstack/app/Access/LdapService.php(349): BookStack\Access\LdapService->getGroupsRecursive()
#6 /opt/bookstack/app/Access/LdapService.php(457): BookStack\Access\LdapService->getUserGroups()
#7 /opt/bookstack/app/Access/Guards/LdapSessionGuard.php(88): BookStack\Access\LdapService->syncGroups()
#8 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Auth/AuthManager.php(333): BookStack\Access\Guards\LdapSessionGuard->attempt()
#9 /opt/bookstack/app/Access/LoginService.php(165): Illuminate\Auth\AuthManager->__call()
#10 /opt/bookstack/app/Access/Controllers/LoginController.php(134): BookStack\Access\LoginService->attempt()
#11 /opt/bookstack/app/Access/Controllers/LoginController.php(74): BookStack\Access\Controllers\LoginController->attemptLogin()
#12 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Controller.php(54): BookStack\Access\Controllers\LoginController->login()
#13 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php(43): Illuminate\Routing\Controller->callAction()
#14 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Route.php(265): Illuminate\Routing\ControllerDispatcher->dispatch()
#15 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Route.php(211): Illuminate\Routing\Route->runController()
#16 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Router.php(822): Illuminate\Routing\Route->run()
#17 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Routing\Router->Illuminate\Routing\{closure}()
#18 /opt/bookstack/app/Http/Middleware/CheckGuard.php(27): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#19 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): BookStack\Http\Middleware\CheckGuard->handle()
#20 /opt/bookstack/app/Http/Middleware/RedirectIfAuthenticated.php(28): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#21 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): BookStack\Http\Middleware\RedirectIfAuthenticated->handle()
#22 /opt/bookstack/app/Http/Middleware/Localization.php(32): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#23 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): BookStack\Http\Middleware\Localization->handle()
#24 /opt/bookstack/app/Http/Middleware/RunThemeActions.php(26): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#25 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): BookStack\Http\Middleware\RunThemeActions->handle()
#26 /opt/bookstack/app/Http/Middleware/CheckEmailConfirmed.php(47): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#27 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): BookStack\Http\Middleware\CheckEmailConfirmed->handle()
#28 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/VerifyCsrfToken.php(87): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#29 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\Foundation\Http\Middleware\VerifyCsrfToken->handle()
#30 /opt/bookstack/vendor/laravel/framework/src/Illuminate/View/Middleware/ShareErrorsFromSession.php(48): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#31 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\View\Middleware\ShareErrorsFromSession->handle()
#32 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(120): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#33 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Session/Middleware/StartSession.php(63): Illuminate\Session\Middleware\StartSession->handleStatefulRequest()
#34 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\Session\Middleware\StartSession->handle()
#35 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/AddQueuedCookiesToResponse.php(36): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#36 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\Cookie\Middleware\AddQueuedCookiesToResponse->handle()
#37 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Cookie/Middleware/EncryptCookies.php(74): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#38 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\Cookie\Middleware\EncryptCookies->handle()
#39 /opt/bookstack/app/Http/Middleware/ApplyCspRules.php(33): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#40 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): BookStack\Http\Middleware\ApplyCspRules->handle()
#41 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(137): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#42 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Router.php(821): Illuminate\Pipeline\Pipeline->then()
#43 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Router.php(800): Illuminate\Routing\Router->runRouteWithinStack()
#44 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Router.php(764): Illuminate\Routing\Router->runRoute()
#45 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Routing/Router.php(753): Illuminate\Routing\Router->dispatchToRoute()
#46 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(200): Illuminate\Routing\Router->dispatch()
#47 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(180): Illuminate\Foundation\Http\Kernel->Illuminate\Foundation\Http\{closure}()
#48 /opt/bookstack/app/Http/Middleware/PreventResponseCaching.php(28): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#49 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): BookStack\Http\Middleware\PreventResponseCaching->handle()
#50 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Http/Middleware/TrustProxies.php(58): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#51 /opt/bookstack/app/Http/Middleware/TrustProxies.php(41): Illuminate\Http\Middleware\TrustProxies->handle()
#52 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): BookStack\Http\Middleware\TrustProxies->handle()
#53 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TransformsRequest.php(21): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#54 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/TrimStrings.php(51): Illuminate\Foundation\Http\Middleware\TransformsRequest->handle()
#55 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\Foundation\Http\Middleware\TrimStrings->handle()
#56 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Http/Middleware/ValidatePostSize.php(27): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#57 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\Http\Middleware\ValidatePostSize->handle()
#58 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Middleware/PreventRequestsDuringMaintenance.php(109): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#59 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(219): Illuminate\Foundation\Http\Middleware\PreventRequestsDuringMaintenance->handle()
#60 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php(137): Illuminate\Pipeline\Pipeline->Illuminate\Pipeline\{closure}()
#61 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(175): Illuminate\Pipeline\Pipeline->then()
#62 /opt/bookstack/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php(144): Illuminate\Foundation\Http\Kernel->sendRequestThroughRouter()
#63 /opt/bookstack/public/index.php(23): Illuminate\Foundation\Http\Kernel->handle()
#64 {main}
"}
If I put the account in a security group that has access to the whole Active Directory, everything is working as expected. I think there should be an error handling in place to skip the groups that cannot be found instead of causing the login to fail.
Best regards,
Daniel
Steps to Reproduce
Prevent some groups to be found in Active Directory by using List Object Mode and configure LDAP authentication in BookStack with LDAP_USER_TO_GROUPS enabled.
Expected Behaviour
Being able to login and having all resolvable group memberships evaluated.
Screenshots or Additional Context
No response
Browser Details
No response
Exact BookStack Version
v25.12