Quick answers
- Is CVE-2026-115640 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-115640 being exploited in the wild.
- How severe is CVE-2026-115640?
- Informational severity, published 10 November 2026.
- Which products and versions are affected?
- LimeSurvey Community Edition 7.7.0.
- Is there a fix for CVE-2026-115640?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-115640 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-115640?
- Check whether you run LimeSurvey Community Edition at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is a stored XSS in the Central Participants Database blocklist control where HTML content in the participant_id field is imported without validation and later rendered without encoding in ButtonGroupWidget attributes. An authenticated user with participantpanel:import permission can upload a CSV file containing HTML payload in the participant_id column; when a CPDB editor opens the participant list, the unencoded markup executes in their browser context with their session permissions.
Affected products
- LimeSurvey Community Edition 7.7.0
Timeline
- 2026-11-10: disclosed