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Vulnerability record · CVE-2026-63361 · published 14 August 2026

CVE-2026-63361: Cross-site scripting vulnerability

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.

8.5 CVSS 4.0 High EPSS 0.53% · top 57.5% CWE-79 · Cross-site scripting Deferred
8.5CVSS 4.0 base score
0.53%EPSS exploitation probability, 30 days
NoNot in CISA KEV
0Affected product versions listed by NVD
4References
28 Aug 2026Last modified by NVD

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.

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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

References

LinkTags
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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Source: NIST National Vulnerability Database (record CVE-2026-63361), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.