Quick answers
- Is CVE-2026-91775 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-91775 being exploited in the wild.
- How severe is CVE-2026-91775?
- Informational severity, published 23 September 2026.
- Which products and versions are affected?
- LimeSurvey Community Edition 7.0.14 and potentially other versions.
- Is there a fix for CVE-2026-91775?
- 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-2026-91775 attacked?
- It is attacked over the network, in a web application.
- Am I affected by CVE-2026-91775?
- 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
This is a reflected XSS vulnerability in the survey import functionality where user-supplied data from .lss survey files is rendered without proper HTML encoding in warning messages shown to administrators. The attack requires an administrator to import a malicious survey file, but no additional user interaction beyond that is required. Successful exploitation allows an attacker to execute arbitrary JavaScript in the administrator's session context.
Affected products
- LimeSurvey LimeSurvey Community Edition 7.0.14 and potentially other versions
Timeline
- 2026-09-23: disclosed