Affected versions of Flowintel render calendar event titles using innerHTML. Because those titles are derived from case titles, a user able to create or modify a case title could store HTML or script-capable content that is later interpreted by the browser when another user views the calendar.
The fix changes:
titleEl.innerHTML = arg.event.title
to:
titleEl.textContent = arg.event.title || ''
and similarly stops using innerHTML for the static download icon.
Version impacted =>3.3.0
{
"cna_assigner": "CIRCL",
"cwe_ids": [
"CWE-79"
],
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/81xxx/CVE-2026-81814.json"
}{
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"last_affected": "3.3.0"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StandardRange"
},
{
"range": [
{
"fixed": "f224438eb495e6b0d4e465eb7f40ab771bbfdb76"
}
],
"source": "REFERENCES_COMMIT"
}
]
}