CVE-2026-81814CWE-79cross-site-scripting

CVE-2026-81814

published August 27, 2026

CVSS
5.1
EPSS
0%
Percentile
32.7
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS
5.1 · NONE
CVSS v4.0
5.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
EPSS
0.00396 · 32.7th percentile
Weakness
CWE-79 · Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Published
2026-08-27T17:18Z
References (1)
https://github.com/flowintel/flowintel/commit/f224438eb495e6b0d4e465eb7f40ab771bbfdb76.patch · 5a6e4751-2f3f-4070-9419-94fb35b644e8
EPSS history
Timeline
  • 27 AUG 12:48Z
    Flowintel Stored XSS in Calendar via Malicious Case Title
    cvelistv5