EUVD-2026-24161CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
Lifecycle Timeline
2DescriptionNVD
Twenty is an open source CRM. Prior to 1.20.6, a Stored Cross-Site Scripting (XSS) vulnerability exists in the BlockNote editor component. Due to a lack of protocol validation in the FileBlock component and insufficient server-side inspection of block content, an attacker can inject a javascript: URI into the url property of a file block. This allows the execution of arbitrary JavaScript when a user clicks on the malicious file attachment. This vulnerability is fixed in 1.20.6.
AnalysisAI
Stored cross-site scripting in Twenty CRM versions prior to 1.20.6 allows authenticated attackers to inject malicious JavaScript URIs into file block attachments via the BlockNote editor, executing arbitrary code in the browsers of users who click the malicious link. The vulnerability bypasses protocol validation in the FileBlock component and lacks server-side sanitization of block content; exploitation requires user interaction (clicking the attachment) but persistence is stored on the server, affecting all subsequent users who view the compromised document.
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