LimeSurvey/LimeSurvey
Oct 2024 – Jan 2026
15 Months active
Languages Used
PHPJavaScriptHTMLTwigGitApache ConfigurationCSS
Technical Skills
Backend DevelopmentFile HandlingPlugin DevelopmentFront End DevelopmentFrontend DevelopmentAPI Development
Denis Chenu
PROFILE
Denis Chenu
Denis contributed extensively to the LimeSurvey/LimeSurvey repository, delivering features and fixes that improved security, reliability, and user experience. He engineered robust backend solutions for access control, plugin extensibility, and data filtering, while also enhancing frontend accessibility and UI consistency. Using PHP, JavaScript, and SQL, Denis addressed vulnerabilities such as SQL and LDAP injection, implemented safer serialization, and enforced best practices in authentication and error handling. His work included refining survey rendering, strengthening localization, and optimizing import/export workflows. Denis’s approach emphasized maintainable code, thorough validation, and seamless integration, resulting in a more secure, user-friendly, and scalable survey platform.
Overall Statistics
Feature vs Bugs
34%Features
Repository Contributions
70Total
Bugs
35
Commits
70
Features
18
Lines of code
8,730
Activity Months15
Work History
January 2026
3 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for LimeSurvey/LimeSurvey. Focused on security hardening and UI reliability to strengthen business value and user trust. Key features delivered include cross-application XSS protections and 2FA secret length enforcement, plus a reliability fix for the survey settings UI spinner.
3 Commits • 1 Features
Jan 1, 2026January 2026 monthly summary for LimeSurvey/LimeSurvey. Focused on security hardening and UI reliability to strengthen business value and user trust. Key features delivered include cross-application XSS protections and 2FA secret length enforcement, plus a reliability fix for the survey settings UI spinner.
January 2026
December 2025
3 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for LimeSurvey/LimeSurvey: Key features delivered include installation input validation improvements; major bugs fixed include incorrect statistics for MCQ responses and XSS mitigation in the question editor. Overall impact includes improved data accuracy, safer installation experience, and strengthened security. Technologies demonstrated include SQL query improvements, input validation, and secure coding practices with traceable commits.
December 2025
3 Commits • 1 Features
Dec 1, 2025December 2025 monthly summary for LimeSurvey/LimeSurvey: Key features delivered include installation input validation improvements; major bugs fixed include incorrect statistics for MCQ responses and XSS mitigation in the question editor. Overall impact includes improved data accuracy, safer installation experience, and strengthened security. Technologies demonstrated include SQL query improvements, input validation, and secure coding practices with traceable commits.
November 2025
1 Commits
Nov 1, 2025November 2025 monthly summary for LimeSurvey/LimeSurvey: Focused on stabilizing error UX and theme consistency. Delivered a bug fix to ensure error pages use the correct theme option, correctly retrieve the survey ID, and apply the appropriate template based on survey context, resulting in a consistent user experience across error scenarios and improved reliability.
1 Commits
Nov 1, 2025November 2025 monthly summary for LimeSurvey/LimeSurvey: Focused on stabilizing error UX and theme consistency. Delivered a bug fix to ensure error pages use the correct theme option, correctly retrieve the survey ID, and apply the appropriate template based on survey context, resulting in a consistent user experience across error scenarios and improved reliability.
November 2025
October 2025
6 Commits • 1 Features
Oct 1, 2025In October 2025, the LimeSurvey effort delivered notable UI/UX enhancements for survey rendering, strengthened security, and improved reliability. Key features delivered include the Survey Rendering and UI Layout Improvements, with refactored radio/MC rendering, single UL grouping, improved 'Other' styling, and a CSS-based column approach for better accessibility and maintainability. Major bugs fixed include printing stability for surveys with empty date questions, LDAP injection prevention, controlled error reporting based on debug level, and HTML sanitization for user creation notifications. Overall, these changes reduce production risk, improve user experience, and strengthen security posture. Technologies demonstrated include CSS-based layout, DOM structuring, input sanitization, secure coding practices, and robust error handling.
October 2025
6 Commits • 1 Features
Oct 1, 2025In October 2025, the LimeSurvey effort delivered notable UI/UX enhancements for survey rendering, strengthened security, and improved reliability. Key features delivered include the Survey Rendering and UI Layout Improvements, with refactored radio/MC rendering, single UL grouping, improved 'Other' styling, and a CSS-based column approach for better accessibility and maintainability. Major bugs fixed include printing stability for surveys with empty date questions, LDAP injection prevention, controlled error reporting based on debug level, and HTML sanitization for user creation notifications. Overall, these changes reduce production risk, improve user experience, and strengthen security posture. Technologies demonstrated include CSS-based layout, DOM structuring, input sanitization, secure coding practices, and robust error handling.
August 2025
1 Commits • 1 Features
Aug 1, 2025Concise monthly summary for 2025-08 focusing on business value and technical achievements in LimeSurvey/LimeSurvey.
1 Commits • 1 Features
Aug 1, 2025Concise monthly summary for 2025-08 focusing on business value and technical achievements in LimeSurvey/LimeSurvey.
August 2025
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary focusing on LimeSurvey/LimeSurvey. Key features delivered include a robust update process and compatibility for 3.x with ComfortUpdateChecker, ensuring the plugin is present and adding conditional handling for different database versions to prevent deprecation warnings and improve robustness across configurations. Major bugs fixed include security improvements and UI accuracy: sanitizing the sortmethod in the statistics module to prevent SQL injection, and fixing translation display of French characters in two form views by unescaping translated strings. These changes reduce upgrade risk, strengthen security, and enhance user experience across locales.
July 2025
3 Commits • 1 Features
Jul 1, 2025July 2025 monthly summary focusing on LimeSurvey/LimeSurvey. Key features delivered include a robust update process and compatibility for 3.x with ComfortUpdateChecker, ensuring the plugin is present and adding conditional handling for different database versions to prevent deprecation warnings and improve robustness across configurations. Major bugs fixed include security improvements and UI accuracy: sanitizing the sortmethod in the statistics module to prevent SQL injection, and fixing translation display of French characters in two form views by unescaping translated strings. These changes reduce upgrade risk, strengthen security, and enhance user experience across locales.
June 2025
4 Commits
Jun 1, 2025June 2025: LimeSurvey/LimeSurvey focused on security hardening and UX improvements. Implemented safer unserialization defaults and explicit token decoding controls to mitigate remote code execution risk. Enhanced validation and error messaging across forms, improving feedback for soft mandatory questions, numeric questions, and session/site settings handling. These changes reduce security risk, improve user experience, and lower support load while reinforcing robust coding practices.
4 Commits
Jun 1, 2025June 2025: LimeSurvey/LimeSurvey focused on security hardening and UX improvements. Implemented safer unserialization defaults and explicit token decoding controls to mitigate remote code execution risk. Enhanced validation and error messaging across forms, improving feedback for soft mandatory questions, numeric questions, and session/site settings handling. These changes reduce security risk, improve user experience, and lower support load while reinforcing robust coding practices.
June 2025
May 2025
5 Commits • 1 Features
May 1, 2025May 2025 (LimeSurvey/LimeSurvey): Delivered reliability and observability improvements around plugin management and survey links. Key changes include a new admin email alert for plugin errors, robust PHP 8.3 plugin upload handling, and strengthened survey link validation and sanitization to prevent broken redirects and invalid inputs. These changes reduce downtime, improve admin responsiveness, and enhance user trust in survey delivery.
May 2025
5 Commits • 1 Features
May 1, 2025May 2025 (LimeSurvey/LimeSurvey): Delivered reliability and observability improvements around plugin management and survey links. Key changes include a new admin email alert for plugin errors, robust PHP 8.3 plugin upload handling, and strengthened survey link validation and sanitization to prevent broken redirects and invalid inputs. These changes reduce downtime, improve admin responsiveness, and enhance user trust in survey delivery.
April 2025
3 Commits
Apr 1, 2025April 2025 monthly summary for LimeSurvey/LimeSurvey focused on reliability, security, and data integrity improvements. Delivered three notable fixes: LDAP LDAPS connectivity reliability fix, CSV participant import stability, and SQL injection prevention in central participant management. These changes reduce import errors, stabilize LDAP-based workflows, and strengthen security against input-based attacks, contributing to safer deployments and smoother bulk operations.
3 Commits
Apr 1, 2025April 2025 monthly summary for LimeSurvey/LimeSurvey focused on reliability, security, and data integrity improvements. Delivered three notable fixes: LDAP LDAPS connectivity reliability fix, CSV participant import stability, and SQL injection prevention in central participant management. These changes reduce import errors, stabilize LDAP-based workflows, and strengthen security against input-based attacks, contributing to safer deployments and smoother bulk operations.
April 2025
March 2025
9 Commits • 4 Features
Mar 1, 2025March 2025 (2025-03) monthly summary for LimeSurvey/LimeSurvey focused on delivering core UX improvements, robust data handling, UI reliability, and security enhancements that drive business value. The work emphasizes per-user personalization, data integrity, accessibility, and a stronger security posture, with clear, maintainable changes across the codebase.
March 2025
9 Commits • 4 Features
Mar 1, 2025March 2025 (2025-03) monthly summary for LimeSurvey/LimeSurvey focused on delivering core UX improvements, robust data handling, UI reliability, and security enhancements that drive business value. The work emphasizes per-user personalization, data integrity, accessibility, and a stronger security posture, with clear, maintainable changes across the codebase.
February 2025
11 Commits • 2 Features
Feb 1, 2025February 2025 performance summary for LimeSurvey/LimeSurvey focused on security hardening, reliability, and user experience improvements. Delivered multiple security fixes for remote control permissions, hardened access to sensitive scripts, and improved asset URL handling. Achieved PHP 8.0 compatibility improvements and introduced test tooling to stabilize test results, plus UX improvements for grid/listing preferences.
11 Commits • 2 Features
Feb 1, 2025February 2025 performance summary for LimeSurvey/LimeSurvey focused on security hardening, reliability, and user experience improvements. Delivered multiple security fixes for remote control permissions, hardened access to sensitive scripts, and improved asset URL handling. Achieved PHP 8.0 compatibility improvements and introduced test tooling to stabilize test results, plus UX improvements for grid/listing preferences.
February 2025
January 2025
5 Commits • 1 Features
Jan 1, 2025January 2025 highlights for LimeSurvey/LimeSurvey: Security, localization accuracy, and developer productivity improvements. Delivered four targeted changes that reduce risk and speed maintenance: per-user access control for SurveyList, corrected French rendering for deletion prompts, safer LDAP import with diagnostic detail to prevent 500 errors, and repository hygiene enhancements plus suppression of debug warnings to streamline development and reduce noise. These changes strengthen privacy, UX localization quality, import resilience, and the developer workflow, contributing to overall system reliability and faster troubleshooting.
January 2025
5 Commits • 1 Features
Jan 1, 2025January 2025 highlights for LimeSurvey/LimeSurvey: Security, localization accuracy, and developer productivity improvements. Delivered four targeted changes that reduce risk and speed maintenance: per-user access control for SurveyList, corrected French rendering for deletion prompts, safer LDAP import with diagnostic detail to prevent 500 errors, and repository hygiene enhancements plus suppression of debug warnings to streamline development and reduce noise. These changes strengthen privacy, UX localization quality, import resilience, and the developer workflow, contributing to overall system reliability and faster troubleshooting.
December 2024
10 Commits • 3 Features
Dec 1, 2024December 2024 monthly summary for LimeSurvey/LimeSurvey: Focused on delivering user-centric improvements and strengthening security posture. Key UI accessibility work in the Vanilla theme reduces friction for assistive tech users. RPC enhancements broaden integration capabilities by enabling group-based filtering. Security hardening across export permissions, token management, and survey/role operations reduces risk exposure and enforces proper governance. Localization bug fixes ensure correct rendering of special characters. These efforts translate into safer survey management, more robust integrations, and a better overall user experience for administrators and respondents.
10 Commits • 3 Features
Dec 1, 2024December 2024 monthly summary for LimeSurvey/LimeSurvey: Focused on delivering user-centric improvements and strengthening security posture. Key UI accessibility work in the Vanilla theme reduces friction for assistive tech users. RPC enhancements broaden integration capabilities by enabling group-based filtering. Security hardening across export permissions, token management, and survey/role operations reduces risk exposure and enforces proper governance. Localization bug fixes ensure correct rendering of special characters. These efforts translate into safer survey management, more robust integrations, and a better overall user experience for administrators and respondents.
December 2024
November 2024
5 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for LimeSurvey/LimeSurvey focusing on reliability improvements, UI/UX polish, and test coverage.
November 2024
5 Commits • 1 Features
Nov 1, 2024November 2024 monthly summary for LimeSurvey/LimeSurvey focusing on reliability improvements, UI/UX polish, and test coverage.
October 2024
1 Commits • 1 Features
Oct 1, 2024Month: 2024-10 — Key accomplishments focused on extending the LimeSurvey plugin system with a new file upload extensibility hook. This work enables plugins to intercept, validate, modify, or cancel uploads before they are moved to storage, unlocking business value through stricter validation, easier integration with external storage/workflows, and improved governance of uploaded assets.
1 Commits • 1 Features
Oct 1, 2024Month: 2024-10 — Key accomplishments focused on extending the LimeSurvey plugin system with a new file upload extensibility hook. This work enables plugins to intercept, validate, modify, or cancel uploads before they are moved to storage, unlocking business value through stricter validation, easier integration with external storage/workflows, and improved governance of uploaded assets.
October 2024
Activity
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Quality Metrics
Correctness88.6%
Maintainability85.6%
Architecture79.0%
Performance84.4%
AI Usage20.0%
Skills & Technologies
Programming Languages
Apache ConfigurationCSSGitHTMLJavaScriptPHPTwig
Technical Skills
API DevelopmentAPI SecurityAccess ControlAccessibilityAuthenticationBackend DevelopmentBug FixingCSSCode MaintenanceCode RefactoringConfiguration ManagementData FilteringDatabase ManagementDebuggingEmail Integration
Repositories Contributed To
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