{"affected":[{"defaultStatus":"unaffected","platforms":["Windows","MacOS","Linux"],"product":"LimeSurvey Community Edition","source":"CNA: Fluid Attacks","vendor":"LimeSurvey","versions":[{"lessThanOrEqual":"7.7.0","status":"affected","version":"3.0.0","versionType":"semver"}]}],"cveId":"CVE-2026-115640","cwes":["CWE-79"],"description":"LimeSurvey Community Edition 7.7.0 contains a stored cross-site scripting vulnerability in the Central Participants Database blocklist control. An authenticated user with only global participantpanel:import permission can import a CSV participant_id containing HTML. The import flow persists that value without model validation. When a CPDB editor opens the participant list, LimeSurvey derives ButtonGroupWidget id and name attributes from participant_id and inserts them without HTML encoding, causing attacker-controlled markup to execute in the victim's authenticated LimeSurvey origin. Exploitation can access session-exposed data and issue same-origin requests with the victim's effective permissions.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":7.4,"severity":"high","source":"CNA: Fluid Attacks","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N","version":"4.0"},{"score":7.4,"severity":"high","source":"NVD: help@fluidattacks.com","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/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:X/V:X/RE:X/U:X","version":"4.0"}],"modifiedAt":1794287867300,"publishedAt":1794283939302,"references":[{"source":"CNA: Fluid Attacks","tags":["third-party-advisory"],"url":"https://fluidattacks.com/es/advisories/angel"},{"source":"CNA: Fluid Attacks","tags":["product"],"url":"https://github.com/LimeSurvey/LimeSurvey/"},{"source":"CNA: Fluid Attacks","tags":["patch"],"url":"https://github.com/LimeSurvey/LimeSurvey/commit/4cd281828422abf94468052016eba8897d5ec9aa"},{"source":"CNA: Fluid Attacks","tags":["release-notes"],"url":"https://github.com/LimeSurvey/LimeSurvey/releases/tag/7.9.0+261029"},{"source":"help@fluidattacks.com","tags":[],"url":"https://fluidattacks.com/es/advisories/angel"},{"source":"help@fluidattacks.com","tags":[],"url":"https://github.com/LimeSurvey/LimeSurvey/"},{"source":"help@fluidattacks.com","tags":[],"url":"https://github.com/LimeSurvey/LimeSurvey/commit/4cd281828422abf94468052016eba8897d5ec9aa"},{"source":"help@fluidattacks.com","tags":[],"url":"https://github.com/LimeSurvey/LimeSurvey/releases/tag/7.9.0+261029"}],"remediation":[{"kind":"fix","source":"CNA: Fluid Attacks","text":"Upgrade to LimeSurvey Community Edition 7.9.0 or later; the vendor patch validates newly imported participant IDs and encodes ButtonGroupWidget attributes."},{"kind":"workaround","source":"CNA: Fluid Attacks","text":"Restrict CPDB Import and Update permissions and remove suspicious participant IDs until upgrade completion."},{"kind":"fix","source":"CNA: Fluid Attacks","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/LimeSurvey/LimeSurvey/commit/4cd281828422abf94468052016eba8897d5ec9aa"}],"revision":"3ef41f731d759b73d0b076ac4a176a377ca06bea913f7b55297ce277a0c0e26f","sources":[{"modifiedAt":1794283939302,"name":"CNA: Fluid Attacks","retrievedAt":1794287314625,"url":"https://www.cve.org/CVERecord?id=CVE-2026-115640"},{"modifiedAt":1794287867300,"name":"NVD","retrievedAt":1794291386864,"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-115640"}],"ssvc":null,"status":"published","title":"LimeSurvey Community Edition 7.7.0 - Stored XSS in Central Participants blocklist control","updatedAt":1794291386864}