CVE-2026-9806
Stored XSS in CTI Transmute Notification Panel
Publication date: 2026-05-28
Last updated on: 2026-05-28
Assigner: 5a6e4751-2f3f-4070-9419-94fb35b644e8
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| misp | cti_transmute | to patched (exc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-79 | The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. |
Attack-Flow Graph
AI Powered Q&A
Can you explain this vulnerability to me?
This vulnerability is a stored cross-site scripting (XSS) issue found in the notification panel of CTI Transmute before a certain patch was applied.
Specifically, notification messages that included user-controlled convert names were rendered using innerHTML without proper sanitization, allowing attackers who could create or influence these convert names to inject arbitrary JavaScript.
When an authenticated user opened the notification panel, the malicious script would execute in their browser.
The vulnerability was fixed by changing the way notification elements are constructed, using DOM methods and assigning content via textContent instead of innerHTML to prevent script execution.
How can this vulnerability impact me? :
Exploitation of this vulnerability could allow an attacker to execute arbitrary JavaScript in the browser of an authenticated user.
This could enable the attacker to perform actions on behalf of the victim within their session or access sensitive information available to the application in the browser context.
What immediate steps should I take to mitigate this vulnerability?
To mitigate this stored cross-site scripting (XSS) vulnerability in the notification panel of CTI Transmute, you should update to the patched version where the issue is fixed.
- Apply the fix that rebuilds notification items using DOM methods like textContent instead of innerHTML to prevent script execution.
- Ensure that notification messages are constructed safely to avoid rendering user-controlled content as executable code.
- Verify that the notification bell panel fetches only unread notifications to reduce exposure.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
The provided information does not specify how this stored cross-site scripting (XSS) vulnerability in CTI Transmute impacts compliance with common standards and regulations such as GDPR or HIPAA.