LimeSurvey bugs and feature requests - Issues

20624: DB crash when updating from 7.0.5 to 7.0.7 due to missing DB version check

Thu, 30 Jul 2026 19:24:26 +0200

While upgrading **LimeSurvey 7.0.5** to **7.0.7**, we encountered a database update failure on a server running **MariaDB 10.1.48**.

As a temporary workaround, we were able to complete the update by changing the column type from `JSON` to `LONGTEXT` in:
`application/helpers/update/updates/Update_709.php` (line **19**)

```php
addColumn("{{responses_" . $sid . "}}", "Q{$parent_qid}", "LONGTEXT");
```

However, we believe the actual issue is that the updater starts the database migration without first verifying that the database server meets the documented minimum requirements.

20623: HTTP Authorization header field not treated as case-insensitive leading to new editor not working

Thu, 30 Jul 2026 17:46:52 +0200

HTTP Authorization header field not treated as case-insensitive leading to new editor not working

In 'application/libraries/Api/Rest/Endpoint/EndpointFactory.php'[1], the check for the "Authorization" header field is not case-insensitive, as mandated by the HTTP standard.
Thus, the new editor won't work (i.e. be stuck with "Checking permissions…") when ran behind a http server or proxy that uses lower cases header fields (for example haproxy in HTTP/2 mode, as HTTP/2 requires the conversion of header fields to lower case).

[1] https://github.com/LimeSurvey/LimeSurvey/blob/9e6aa71beb752f11b68f03c33e554c81c71cdddc/application/libraries/Api/Rest/Endpoint/EndpointFactory.php#L232-L238

20622: Mandatory ranking questions can not be answered

Thu, 30 Jul 2026 12:40:34 +0200

There is a possible issue specifically related to mandatory validation for Ranking questions. You can not get to the next page even if all items have been ranked.
The issue can be reproduced on a completely new survey with a newly created Ranking question and no custom validation equations configured.

20620: statistic export failed with output format PDF and Excel

Wed, 29 Jul 2026 16:38:39 +0200

hello,

when exporting a statistic from a survey with the output format "PDF" and "Excel", the statistic export failed.

20619: Security update available - although LimeSurvey is updated to the latest 6.x version

Fri, 24 Jul 2026 15:09:39 +0200

We currently have two recent versions, one in the 6.x line and one in the 7.x line. Both are considered stable.
Since we cannot switch to the 7.x version anytime soon, but security updates are available for the 6.x version, the message “Security update available” should only be displayed if not all security patches for the 6.x version have been installed.

This leads to uncertainty and unease among users, as this gives the impression that LimeSurvey is being operated with security vulnerabilities, while at the same time handling sensitive data (surveys).

20616: Invalid datetime format: 1292 Incorrect datetime value

Thu, 23 Jul 2026 16:30:59 +0200

CDbCommand ha riportato un errore nell'esecuzione della query SQL: SQLSTATE[22007]: Invalid datetime format: 1292 Incorrect datetime value: '0000-00-00 00:00:00' for column 'lastmodified' at row 23. The SQL statement executed was: ALTER TABLE `lime_surveys` ADD `showregisterpolicy` varchar(1) NOT NULL DEFAULT 'I'

20613: Survey logic overview option shows error 500

Tue, 28 Jul 2026 21:43:52 +0200

Have a survey developed in Limesurvey version 6, after importing it, and then click in the "Survey logic overview" option, an error appears in screen: "500: Internal Server Error - array_merge(): Argument #2 must be of type array, null given"
Issue confirmed in a locally installed Limesurvey 7.0.5 and in the demo site (demo.limesurvey.org) with Limesurvey 7.0.4
Tested it in the latest version of Limesurvey 6 available (6.7.11), and no issues.

20612: Limesurvey crashing when adding a participant to a imported survey with attributes

Thu, 23 Jul 2026 16:10:22 +0200

When importing a survey previously developed with additional participant attributes, when adding the first participant, Limesurvey doesn't request the values of aditional attributes, and when saving the participant, Limesurvey crashes with an 500 error. Doesn't happen after trying to add the first participant.

20611: New feature to exclude items at quick translation

Fri, 17 Jul 2026 16:58:35 +0200

The quick translation feature is a very useful tool, especially when making use of a Google Translate API key to automatically translate items to different languages. There are some drawbacks though: When using the auto-translation, it always adjusts all items on the current page/tab. But if parts of the translation have already been reviewed by a native speaker, or if there are equation questions, which the auto-translate sometimes messes up, then you need to redo the whole translation process after the auto-translation was done.

This can easily be solved by having a checkbox for every item, which is enabled by default, but offers the ability for the user to disable the translation feature for certain items.

We could try to develop this and provide a pull request. Is this considered a helpful feature? Then we would give it a try.

20609: Admin notification url are not updated as link

Wed, 29 Jul 2026 17:40:48 +0200

Admin notification URLs like VIEWRESPONSEURL are not set as link

20608: datasecurity_notice_label is not rendered correctly with "Collapsible text" and "All in one" survey format

Fri, 17 Jul 2026 14:04:12 +0200

This is a follow up for 19852.

20607: Placeholder fields are empty in the Email Templates editor

Tue, 21 Jul 2026 18:04:23 +0200

When editing an Email Template, the list of available placeholder fields is empty.

The issue does not affect all email template types.

In the Email Templates editor:
For Invitation and Reminder, the list of available replacement fields is displayed correctly.
For Confirmation, Registration, Basic admin notification, and Detailed admin notification, the replacement field panel displays the message:

> No replacement variable available for this field

20605: Non consistent branch label

Tue, 21 Jul 2026 18:05:02 +0200

In the Comfort Update screen, the message says there is an unsable update but actually it is a stable one.
See screenshot

20600: When try to create dummy participant : page must be reloaded

Tue, 07 Jul 2026 19:44:35 +0200

When try to create dummy participant, if you don't reload the page, no action is done when you clickthe 1st time
This happen with mandatory attribute.

20599: When questions have a relevance equation, mandatory questions are not enforced.

Thu, 09 Jul 2026 08:57:18 +0200

I am seeing issues in a survey, where I have mandatory questions, and I am able to move forward without answering them
The issue seems to happen when questions have a relevance equation... that seems to kill the enforcement of mandatory questions.
When the questions don't have relevance equations, the mandatory rule is enforced.

This happens on v6 and v7

20598: Token overwrite when opening multiple survey tokens in different tabs of the same browser

Thu, 09 Jul 2026 12:35:34 +0200

When a user opens two distinct token links for the same survey in two different tabs of the same browser session, LimeSurvey overwrites the active token session data with the most recently loaded one. If the user goes back to the first tab and tries to save or proceed, the response data gets cross-contaminated or associated with the second token.

20596: Panel-Integration parameter (Survey-URL-Parameter) missing after copy

Tue, 21 Jul 2026 18:10:46 +0200

When I copy a survey, the panel integration parameters are missing in the result.

When using export / import to "copy" a survey, the panel integration parameters are not missing.

20595: Printable Survey not showing "other", after importing via txt

Mon, 06 Jul 2026 12:03:24 +0200

After importing a Survey via txt the "export" -> "Printable Survey" view does not show any other fields.
A workaround for this is: After importing open every question containing an other field, then saving the question (without any changes).
It seems as if saving the questions changes some parameter in the background, which is necessary for the Printable survey view.

Also it seems that the issue:
only occurs on txt import
applies to all question that have a built in other field option
is unaffected by other position and custom text

20594: It is not possible to delete answer options/subquestions after upgrading to 7.0.4+260620

Fri, 24 Jul 2026 14:37:47 +0200

After upgrading to LimeSurvey 7.0.4+260620 via Comfort Update, answer options can be created but cannot be deleted. The issue appears to affect all question types with answer options and subquestions.

20589: Direct link to view single response no longer opens a dedicated page since v7 — only a modal/popup, breaking shareable links

Wed, 01 Jul 2026 15:24:01 +0200

## Expected Behavior

In previous LimeSurvey versions (pre-v7), clicking view/edit on a response opened a dedicated page with its own unique URL, e.g.:

https://umfrage.example.tld/responses/view?surveyId=532561&id=280

This URL was directly shareable, colleagues or reviewers could be sent a link straight to a specific response without needing to log in, navigate to the survey, and manually search for the response ID.

## Problem

* Old-style direct links (responses/view?surveyId=X&id=Y) still resolve to a working page (confirmed on our instance), but this is no longer reachable from the UI itself.
* The response list now only supports a popup for viewing/editing individual responses, and popups cannot be bookmarked, linked, or shared via URL.
* This breaks existing workflows for teams that share direct links to specific responses (e.g. for QA, moderation, or cross-referencing with partners).

## Suggested Fix

Restore the option to open a response in its own dedicated page (either as default behavior or as a user-selectable alternative to the popup), so the URL updates to reflect the currently viewed response and can be copied/shared.

Alternatively: make the popup update the browser URL (e.g. via history.pushState) so the current response state is reflected in a shareable link, similar to how many modern SPA implementations preserve deep-linkability even inside modals.

20588: Error while import participants for csv file

Wed, 22 Jul 2026 12:04:03 +0200

Error while import participants for csv file

Invalid access codes skipped when the token field is filled in

for example:

tid,firstname,lastname,email,emailstatus,token,language,validfrom,validuntil,invited,reminded,remindercount,completed,usesleft
"1","first","last","first.last@gmail.com","OK","DIOnqyPDjZJPDws","pl","","","N","N","0","N","1"

When the token field is empty import executes successfully.

20586: Unabole to use installer GUI whith nginx or IIS

Tue, 30 Jun 2026 17:01:06 +0200

When trying to install a v7 version with a not configured nginx for url rewriting, redirection is /index.php/installer goes to a 404

20585: New editor throws error - 404 could not resolve request editor

Wed, 15 Jul 2026 12:10:58 +0200

In a fresh install of limesurvey 7.0.5 I can create and edit a survey with the classic editor. As soon as I switch to the new editor I can neither edit an existing survey nor create a new one.

To be more specific, when i try to create a new survey a survey is created but the redirect to the edit view of this new survey instantly throws an error.

20582: Several deprecation errors when using version 7.0.5 with PHP 8.4

Mon, 29 Jun 2026 16:27:08 +0200

I had to modify several files in order to get rid of a deprecation message:

PHP Deprecated: DI\autowire(): Implicitly marking parameter $className as nullable is deprecated, the explicit nullable type must be used instead in /var/www/vhosts/wordpress/htdocs/umfrage.dgb-bildungswerk.de/vendor/php-di/php-di/src/functions.php on line 48
PHP Deprecated: DI\create(): Implicitly marking parameter $className as nullable is deprecated, the explicit nullable type must be used instead in /var/www/vhosts/wordpress/htdocs/umfrage.dgb-bildungswerk.de/vendor/php-di/php-di/src/functions.php on line 35
PHP Deprecated: GoldSpecDigital\ObjectOrientedOAS\Objects\Schema::boolean(): Implicitly marking parameter $objectId as nullable is deprecated, the explicit nullable type must be used instead in /var/www/vhosts/wordpress/htdocs/umfrage.dgb-bildungswerk.de/vendor/goldspecdigital/oooas/src/Objects/Schema.php on line 232
PHP Deprecated: GoldSpecDigital\ObjectOrientedOAS\Objects\Schema::integer(): Implicitly marking parameter $objectId as nullable is deprecated, the explicit nullable type must be used instead in /var/www/vhosts/wordpress/htdocs/umfrage.dgb-bildungswerk.de/vendor/goldspecdigital/oooas/src/Objects/Schema.php on line 241
PHP Deprecated: GoldSpecDigital\ObjectOrientedOAS\Objects\Schema::number(): Implicitly marking parameter $objectId as nullable is deprecated, the explicit nullable type must be used instead in /var/www/vhosts/wordpress/htdocs/umfrage.dgb-bildungswerk.de/vendor/goldspecdigital/oooas/src/Objects/Schema.php on line 250
PHP Deprecated: GoldSpecDigital\ObjectOrientedOAS\Objects\Schema::object(): Implicitly marking parameter $objectId as nullable is deprecated, the explicit nullable type must be used instead in /var/www/vhosts/wordpress/htdocs/umfrage.dgb-bildungswerk.de/vendor/goldspecdigital/oooas/src/Objects/Schema.php on line 259
PHP Deprecated: GoldSpecDigital\ObjectOrientedOAS\Objects\Schema::string(): Implicitly marking parameter $objectId as nullable is deprecated, the explicit nullable type must be used instead in /var/www/vhosts/wordpress/htdocs/umfrage.dgb-bildungswerk.de/vendor/goldspecdigital/oooas/src/Objects/Schema.php on line 268

./vendor/php-di/php-di/src/Proxy/ProxyFactory.php
43c43
< public function __construct(bool $writeProxiesToFile = false, ?string $proxyDirectory = null)
---
> public function __construct(bool $writeProxiesToFile = false, string $proxyDirectory = null)

./vendor/php-di/php-di/src/Definition/Helper/CreateDefinitionHelper.php
56c56
< public function __construct(?string $className = null)
---
> public function __construct(string $className = null)

./vendor/php-di/php-di/src/Definition/Resolver/ParameterResolver.php
39,40c39,40
< ?MethodInjection $definition = null,
< ?ReflectionMethod $method = null,
---
> MethodInjection $definition = null,
> ReflectionMethod $method = null,

./vendor/php-di/php-di/src/Definition/Resolver/ObjectCreator.php
212c212
< public static function setPrivatePropertyValue(?string $className, $object, string $propertyName, $propertyValue)
---
> public static function setPrivatePropertyValue(string $className = null, $object, string $propertyName, $propertyValue)

./vendor/php-di/php-di/src/Definition/Source/DefinitionArray.php
39c39
< public function __construct(array $definitions = [], ?Autowiring $autowiring = null)
---
> public function __construct(array $definitions = [], Autowiring $autowiring = null)

./vendor/php-di/php-di/src/Definition/Source/Autowiring.php
23c23
< public function autowire(string $name, ?ObjectDefinition $definition = null);
---
> public function autowire(string $name, ObjectDefinition $definition = null);

./vendor/php-di/php-di/src/Definition/Source/DefinitionNormalizer.php
46c46
< public function normalizeRootDefinition($definition, string $name, ?array $wildcardsReplacements = null) : Definition
---
> public function normalizeRootDefinition($definition, string $name, array $wildcardsReplacements = null) : Definition

./vendor/php-di/php-di/src/Definition/Source/AnnotationBasedAutowiring.php
56c56
< public function autowire(string $name, ?ObjectDefinition $definition = null)
---
> public function autowire(string $name, ObjectDefinition $definition = null)

./vendor/php-di/php-di/src/Definition/ObjectDefinition.php
72c72
< public function __construct(string $name, ?string $className = null)
---
> public function __construct(string $name, string $className = null)
88c88
< public function setClassName(?string $className = null)
---
> public function setClassName(string $className = null)
186c186
< public function setLazy(?bool $lazy = null)
---
> public function setLazy(bool $lazy = null)

./vendor/php-di/php-di/src/Container.php
98,100c98,100
< ?MutableDefinitionSource $definitionSource = null,
< ?ProxyFactory $proxyFactory = null,
< ?ContainerInterface $wrapperContainer = null
---
> MutableDefinitionSource $definitionSource = null,
> ProxyFactory $proxyFactory = null,
> ContainerInterface $wrapperContainer = null

./vendor/php-di/php-di/src/ContainerBuilder.php
283c283
< public function writeProxiesToFile(bool $writeToFile, ?string $proxyDirectory = null) : self
---
> public function writeProxiesToFile(bool $writeToFile, string $proxyDirectory = null) : self

20581: application/controllers/ResponsesController.php crashes (due to php 8.4)

Mon, 29 Jun 2026 16:48:43 +0200

The display of responses generates a php error:
ResponsesController::actionDeleteAttachments(): Implicitly marking parameter $responseId as nullable is deprecated, the explicit nullable type must be used instead
/srv/www/formulaire.unige.ch/html_root/outils/limeemploi/application/controllers/ResponsesController.php(808)

I've patched it adding a "?" before the second "int" on line 808:

diff ResponsesController.php.00 ResponsesController.php
808c808

< public function actionDeleteAttachments(int $surveyId, int $responseId = null): void
---
> public function actionDeleteAttachments(int $surveyId, ?int $responseId = null): void

I've checked, the error is still in v 6.17.10