CVE-2026-81814 - Vulnerability Details - OpenCVE

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

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact Low

Vulnerable System Integrity Impact Low

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

No data.

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References

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

History

Thu, 27 Aug 2026 13:00:00 +0000

Type	Values Removed	Values Added
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
Title		Flowintel Stored XSS in Calendar via Malicious Case Title
Weaknesses		CWE-79
References		https://github.com/flowintel/flowintel/commit/f224438eb495e6b0d4e465eb7f40ab771bbfdb76.patch
Metrics		cvssV4_0 `{'score': 5.1, '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'}`

MITRE

Status: PUBLISHED

Assigner: CIRCL

Published: 2026-08-27T12:48:39.314Z

Updated: 2026-08-27T12:48:39.314Z

Reserved: 2026-08-27T12:48:37.284Z

Link: CVE-2026-81814

Vulnrichment

No data.

NVD

Status : Received

Published: 2026-08-27T13:18:43.790

Modified: 2026-08-27T13:18:43.790

Link: CVE-2026-81814

Redhat

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OpenCVE Enrichment

No data.

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