CVE-2026-91775

Description

LimeSurvey fails to safely encode attacker-controlled content from a crafted .lss survey file when displaying import warnings, resulting in XSS in the administrative interface.

References

• https://fluidattacks.com/advisories/alone
• https://github.com/LimeSurvey/LimeSurvey
• https://github.com/LimeSurvey/LimeSurvey/commit/c96db8093e852eb8b1a2ebbb32478d6fb34cb651
• https://fluidattacks.com/advisories/alone