20375: Error - Cannot access offset of type array on array - LimeSurvey bugs and feature requests

This issue affects 1 person(s).

ID	Project	Category	View Status	Date Submitted	Last Update

20375	Bug reports	_ Unknown	public	2025-11-27 18:06	2025-12-02 10:21

Reporter	c_schmitz	Assigned To	c_schmitz
Priority	none	Severity	minor
Status	resolved	Resolution	fixed
Product Version	6.12.x

Summary	20375: Error - Cannot access offset of type array on array
Description	Happens when opening the following URL like this: /index.php/admin/authentication/sa/data/?lang=[]
Steps To Reproduce	Steps to reproduce Open the following URL Expected result Should ignore invaliad language parameter Actual result Throws unexpected error
Tags	No tags attached.

Bug heat	4
Complete LimeSurvey version number (& build)	6.16.0
I will donate to the project if issue is resolved	No
Browser
Database type & version	.
Server OS (if known)
Webserver software & version (if known)
PHP Version	.

User List	There are no users monitoring this issue.

DenisChenu 2025-11-27 18:07 developer ~83955	Ignore or send a 400 ?

c_schmitz 2025-11-27 18:15 administrator ~83956 Last edited: 2025-11-27 18:17	I would filter it - See https://github.com/LimeSurvey/LimeSurvey/pull/4578

c_schmitz 2025-12-02 10:21 administrator ~83969	Fix committed to master branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=39251

c_schmitz 2025-12-02 10:21 administrator ~83970	Fix committed to master branch: http://bugs.limesurvey.org/plugin.php?page=Source/view&id=39252

LimeSurvey: master 3036b4b9 2025-12-02 10:21 c_schmitz Committer: GitHub Details Diff	Fixed issue 20375: Error - "Cannot access offset of type array on array" when invalid lang param is used (04578)	Affected Issues 20375
	mod - application/controllers/admin/ExpressionValidate.php	Diff File
	mod - application/core/LSYii_Application.php	Diff File
	mod - application/core/LSYii_Validators.php	Diff File
	mod - application/helpers/sanitize_helper.php	Diff File
	mod - application/models/Survey.php	Diff File
	mod - application/views/admin/authentication/login.php	Diff File
	mod - tests/unit/LSYiiValidatorsTest.php	Diff File
LimeSurvey: master 3036b4b9 2025-12-02 10:21 c_schmitz Committer: GitHub Details Diff	Fixed issue 20375: Error - "Cannot access offset of type array on array" when invalid lang param is used (04578)	Affected Issues 20375
	mod - application/controllers/admin/ExpressionValidate.php	Diff File
	mod - application/core/LSYii_Application.php	Diff File
	mod - application/core/LSYii_Validators.php	Diff File
	mod - application/helpers/sanitize_helper.php	Diff File
	mod - application/models/Survey.php	Diff File
	mod - application/views/admin/authentication/login.php	Diff File
	mod - tests/unit/LSYiiValidatorsTest.php	Diff File

Date Modified	Username	Field	Change
2025-11-27 18:06	c_schmitz	New Issue
2025-11-27 18:06	c_schmitz	Assigned To	=> c_schmitz
2025-11-27 18:06	c_schmitz	Status	new => assigned
2025-11-27 18:07	DenisChenu	Note Added: 83955
2025-11-27 18:07	DenisChenu	Bug heat	0 => 2
2025-11-27 18:15	c_schmitz	Note Added: 83956
2025-11-27 18:15	c_schmitz	Bug heat	2 => 4
2025-11-27 18:17	c_schmitz	Note Edited: 83956
2025-12-02 10:21	c_schmitz	Changeset attached	=> LimeSurvey master 3036b4b9
2025-12-02 10:21	c_schmitz	Changeset attached	=> LimeSurvey master 3036b4b9
2025-12-02 10:21	c_schmitz	Note Added: 83969
2025-12-02 10:21	c_schmitz	Note Added: 83970
2025-12-02 10:21	c_schmitz	Status	assigned => resolved
2025-12-02 10:21	c_schmitz	Resolution	open => fixed
2025-12-02 10:21	c_schmitz	Status	assigned => resolved
2025-12-02 10:21	c_schmitz	Resolution	open => fixed