# CVE-2026-81814: Flowintel XSS in calendar through case title

Source: https://junglewise.ai/threats/cve-2026-81814-flowintel-xss-in-calendar-through-case-title  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-08-27. Updated: 2026-09-25  
License: CC BY 4.0 with a link back

CVE-2026-81814 · Severity: info · CVSS 0 · Published 2026-08-27

Flowintel is a case and intelligence management platform that displays events on a calendar. A user with permission to create or modify case titles can inject malicious HTML or JavaScript code that executes in the browsers of other users viewing the calendar, potentially leading to account compromise or data theft.

Technologies: [FlowIntel](https://junglewise.ai/threats/technologies/flowintel). Vendors: [FlowIntel](https://junglewise.ai/threats/vendors/flowintel).

## Quick answers

**Is CVE-2026-81814 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-81814 being exploited in the wild.

**How severe is CVE-2026-81814?** Informational severity, with a CVSS score of 0, published 27 August 2026.

**Which products and versions are affected?** FlowIntel 3.3.0 and earlier.

**Is there a fix for CVE-2026-81814?** A patch was published on 2026-08-18: Fix commit dated 18 Aug 2026, published 27 Aug 2026 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-81814 attacked?** It is attacked over the network, in a web application.

**Am I affected by CVE-2026-81814?** Check whether you run FlowIntel at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

This is a stored cross-site scripting (XSS) vulnerability in the calendar event rendering logic. The vulnerable code uses innerHTML to render calendar event titles derived directly from case titles, without sanitization. An attacker with case creation/modification privileges can inject script-capable HTML that persists in the database. When another user views the calendar, the browser interprets and executes the injected script. The fix replaces innerHTML with textContent, which treats input as plain text and prevents script execution. No CVSS score was provided by the vendor.

## Affected products

- Flowintel Flowintel 3.3.0 and earlier

## Timeline

- 2026-08-27: disclosed
- 2026-08-18: patched: Fix commit dated 18 Aug 2026, published 27 Aug 2026

## References

- [https://github.com/flowintel/flowintel/commit/f224438eb495e6b0d4e465eb7f40ab771bbfdb76.patch](https://github.com/flowintel/flowintel/commit/f224438eb495e6b0d4e465eb7f40ab771bbfdb76.patch)

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