VulnSocial

CVE-2026-35451Disclosure

LOWCVSS 5.7 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch affected systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.5/ 10 priority

Sources & remediation

Other references
Weakness type (CWE)
CWE-79

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • General: 1 classified signal
  • 2 total mentions across 1 day

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-04-21: 2Patch / Workaround · 2026-04-21: 1Technical Details · 2026-04-21: 204-21
Signal classification2 categories
Disclosure
150.0%
General
150.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-35451 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 v… https://www.cve.org/CVERecord?id=CVE-2026-35451 ----- Traducción: CVE-2026-35451 Twe… http://infoflow.cloud`

    Post summary

    The tweet announces CVE‑2026‑35451, a stored XSS flaw in the BlockNote editor of the open‑source CRM Twenty, noting it is fixed in version 1.20.6 and linking to the CVE record.

    0000032
    72 followersView on X
  • CVE@CVEnew
    General

    CVE-2026-35451 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 v… https://www.cve.org/CVERecord?id=CVE-2026-35451

    Post summary

    The post briefly describes CVE‑2026‑35451 as a stored XSS in an open source CRM’s BlockNote editor, with no additional PoC, exploit, or patch details.

    00000160
    57.2K followersView on X

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