What’s Vulnerable › Vulnerabilities

CVE-2026-63361: LimeSurvey Community Edition 7.0.5 - Reflected XSS in HTML editor popup

• Severity: high (CVSS 8.5 v4.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-14 · updated 2026-08-28
• Weakness: CWE-79

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

• LimeSurvey: 7.0.5

References

• https://fluidattacks.com/es/advisories/mercedes
• https://github.com/LimeSurvey/LimeSurvey
• https://github.com/LimeSurvey/LimeSurvey/commit/a8993bfd05c4a11255b8400ed9c41a2c22e93aa4
• https://fluidattacks.com/es/advisories/mercedes

Get alerted when CVE-2026-63361 or the next vulnerability affects your stack