CVE-2026-16809

EUVD-2026-66771
LimeSurvey Community Edition 7.0.5 contains a stored cross-site scripting vulnerability in the survey quota creation workflow. An authenticated low-privileged user who can create and manage their own survey can store malicious JavaScript in a quota message.

This issue affects LimeSurvey: 7.0.5.
Cross-site Scripting
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
Fluid AttacksCNA
7.2 HIGH
NETWORK
LOW
LOW
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 15.31%
Early Detection
Affected products identified ahead of NVD analysis through intelligence sources.
VendorProductVersionSource
limesurveylimesurvey
7.0.5
CNA
Common Weakness Enumeration
References
https://fluidattacks.com/es/advisories/wellerman
https://github.com/LimeSurvey/LimeSurvey
https://fluidattacks.com/es/advisories/wellerman