Vulnerability · Published Aug 27, 2026 · Assigned by CIRCL

CVE-2026-81814Flowintel Stored XSS in Calendar via Malicious Case Title

Medium 5.1

In plain English

A medium-severity cross-site scripting in flowintel from flowintel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 34% of all known vulnerabilities).

Severity (CVSS 4.0)5.1Medium

Exploit odds (30 days)0.4%top 66.0% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

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

Affected products (as reported)

Vendor	Product	Versions
flowintel	flowintel	0 – through 3.3.0

Weakness: CWE-79 · Vector: 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

References

https://github.com/flowintel/flowintel/commit/f224438eb495e6b0d4e465eb7f40ab771bbfdb76.patch patch