Vulnerability · Published Aug 14, 2026 · Assigned by Fluid Attacks
CVE-2026-63361LimeSurvey Community Edition 7.0.5 - Reflected XSS in HTML editor popup
High 8.5
In plain English
A high-severity cross-site scripting in LimeSurvey from LimeSurvey. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 45% of all known vulnerabilities).
Severity (CVSS 4.0)8.5High
Exploit odds (30 days)0.5%top 55.0% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| LimeSurvey | LimeSurvey | 7.0.5 |
Weakness: CWE-79 · Vector: 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