CVE-2026-35451

Description

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.

CVSS Vector

References

• https://github.com/twentyhq/twenty/commit/8da69e0f77ea820a6845a4c3c025b6af3861d523
• https://github.com/twentyhq/twenty/security/advisories/GHSA-7w89-7q26-gj7q
• https://github.com/twentyhq/twenty/security/advisories/GHSA-7w89-7q26-gj7q