CVE-2026-63361

8.5 highEPSS 0.5%

High (8.5). EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 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

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 44% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2026-08-14
Modified: 2026-08-28
Record from: the NVD, synced 2026-10-19

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

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