CVE-2026-63361

LimeSurvey Community Edition 7.0.5 - Reflected XSS in HTML editor popup

State: Published
Severity: 8.5 High
Published: Aug 14, 2026
Updated: Aug 26, 2026
Reserved: Jul 16, 2026

Description

LimeSurvey Community Edition 7.0.5 contains an authenticated reflected cross-site scripting vulnerability in the HTML editor popup endpoint. The text and name query parameters are passed through a blacklist sanitizer and then rendered without context-appropriate output encoding.

Scores

CVSS	Score	Vector	Source
4.0	8.5 High	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N	Fluid Attacks

Weaknesses

CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Affected Products

Product	Versions
LimeSurveyLimeSurvey	7.0.5Affected

References

https://fluidattacks.com/es/advisories/mercedesthird-party-advisory
https://github.com/LimeSurvey/LimeSurveyproduct
https://github.com/LimeSurvey/LimeSurvey/commit/a8993bfd05c4a11255b8400ed9c41a2c22e93aa4patch

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