Tuesday 3 November
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Trojanized Claude Code extension for Cursor hits developers, with a second Cursor issue the same day

Severity
High
Sources
1

Reporting describes a trojanized extension distributed for , an AI-powered IDE, and notes that two serious security issues affected Cursor on the same day. The article gives no CVE identifiers, affected extension or Cursor versions, distribution channel, or indicators of compromise. Defenders should audit installed Cursor extensions, confirm the Claude Code extension's publisher and hash against official sources, and check developer workstations for unexpected activity until more technical detail is published.

For security analysts · Written by AI from 1 source · Wrong?

What to do

  1. Review the extensions installed in Cursor and confirm that any Claude Code extension comes from a trusted, official source.
  2. Remove any Claude Code extension that you cannot verify and check the affected machine for unexpected activity.

Written by AI from the sources, checked against them

Full story timeline · 1 update

  1. Fri 30 OctoberDevs Hit by Trojanized Claude Code Extension for CursorDark Reading

Who reported · 1 outlet

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