CVE-2026-91775 LimeSurvey Community Edition 7.0.14 - Reflected XSS through unescaped LSS survey-import warnings
Attackers can execute arbitrary scripts in the admin interface via crafted survey import warnings, potentially leading to account takeover.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-91775?
CVE-2026-91775 is a high-severity cross-site scripting vulnerability in LimeSurvey, published on 23 Sep 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
LimeSurvey Community Edition 7.0.14 fails to safely encode attacker-controlled content from a crafted .lss survey file when displaying import warnings, resulting in XSS in the administrative interface.
Weakness: CWE-79
Which versions are affected by CVE-2026-91775?
How do I fix CVE-2026-91775?
No fix has been published for CVE-2026-91775 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-91775 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-91775 exists.
Sources
Also known as GHSA-cjg2-mvj3-g74m.