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Medium · 6.3 Public exploit CVE-2026-9806 EUVD-2026-32728GHSA-w9rm-vvqp-qq3h

Stored Cross-Site Scripting (XSS) in CTI Transmute Notification Panel via Malicious Convert Names

Published May 28, 2026 · Updated May 28, 2026 · Assigned by CIRCL

Description

A stored cross-site scripting (XSS) vulnerability exists in the notification panel of CTI Transmute in versions prior to the patched release. Notification messages containing user-controlled convert names were rendered in the notification bell dropdown using innerHTML without adequate sanitization. An attacker able to create or influence a convert name that is included in a notification could inject arbitrary JavaScript, which would execute in the browser of an authenticated user when they opened the notification panel. Successful exploitation could allow the attacker to perform actions in the victim's session or access information available to the application in the browser context. The issue was remediated by constructing notification elements through DOM methods and assigning notification message content via textContent instead of innerHTML. This vulnerability was only present on a development branch.

Affected products

VendorProductAffectedFixed
misp cti-transmute — 1.0

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 1 repository

  • aj2108/CVE-2026-9806 ★ 0 · Aug 2, 2026

    CVE-2026-9806 is a Stored Cross-Site Scripting (Stored XSS) vulnerability affecting CTI Transmute versions prior to the patched release.

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

References