CVE-2026-102626
Deferred Deferred - Pending Action

Cross-Site Scripting in LimeSurvey Community Edition

Publication date: 2026-10-02

Last updated on: 2026-10-02

Assigner: Fluid Attacks

Description
An authenticated LimeSurvey Community Edition 7.4.0 user with the global Surveys: create permission can store a JavaScript-breaking value in the date_min attribute of a Date/Time question. When another user renders the affected question, LimeSurvey inserts the stored value into a single-quoted inline JavaScript literal without JavaScript-context encoding.

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Meta Information

Published
2026-10-02
Last Modified
2026-10-02
Generated
2026-10-02
AI Q&A
2026-10-02
EPSS Evaluated
N/A
NVD
CVE-2026-102626
EUVD
EUVD-2026-91763

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
limesurvey community_edition 7.4.0
limesurvey community_edition to 7.4.0 (inc)
limesurvey community_edition From 7.5.0 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

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Executive Summary

This is a stored cross-site scripting (XSS) vulnerability in LimeSurvey Community Edition 7.4.0. An authenticated user with Surveys: create permission can inject malicious JavaScript into the date_min or date_max attribute of a Date/Time question. The payload bypasses HTML sanitization, is stored in the database, and executes in the browser of any user viewing the question due to improper JavaScript context encoding.

Detection Guidance

To detect this vulnerability, inspect LimeSurvey installations for versions up to 7.4.0. Check for unauthorized JavaScript in Date/Time question attributes like date_min or date_max. Review database entries for suspicious payloads in survey configurations. Use browser developer tools to monitor inline JavaScript execution when rendering affected questions.

Impact Analysis

An attacker could steal session cookies, perform unauthorized actions on behalf of users, or exfiltrate sensitive data like survey responses. Administrators viewing malicious surveys are particularly at risk for session hijacking or data theft. The impact depends on user privileges and the sensitivity of data handled by LimeSurvey.

Compliance Impact

This vulnerability could lead to unauthorized access to personal data, violating GDPR's data protection principles and HIPAA's security requirements. If exploited, it may result in data breaches, requiring breach notifications and potential fines under these regulations.

Mitigation Strategies

Upgrade LimeSurvey to version 7.5.0 or later immediately. Remove or restrict global Surveys: create permissions for non-trusted users. Sanitize all date inputs by escaping expressions using htmlspecialchars. Review and audit survey configurations for malicious payloads in date attributes.

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