CVE-2026-81814 Flowintel Stored XSS in Calendar via Malicious Case Title
Attackers can inject malicious scripts into calendar views via case titles, potentially compromising other users' sessions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-81814?
CVE-2026-81814 is a medium-severity cross-site scripting vulnerability in flowintel, published on 27 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
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
Weakness: CWE-79
Which versions are affected by CVE-2026-81814?
How do I fix CVE-2026-81814?
No fix has been published for CVE-2026-81814 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-81814 being exploited?
There is no known exploitation of CVE-2026-81814 in the wild and no public exploit code.
Sources
Also known as GHSA-pw4w-qcm7-cgq8.