Cursor removes malicious Claude Code extension after SSH backdoor attempt
TechnologyWhat to know
- A malicious version of Anthropic’s Claude Code extension distributed through the Cursor marketplace attempted to install a persistent Secure Shell (SSH) backdoor on developers’ machines, potentially giving attackers remote access to systems holding source code...S1
- The extension performed host reconnaissance and attempted to create a reverse SSH tunnel. securityweek.com/">SecurityWeek.S2
Timeline · newest first
3h
Infoworld
Cursor removes malicious Claude Code extension after SSH backdoor attempt
A malicious version of Anthropic’s Claude Code extension distributed through the Cursor marketplace attempted to install a persistent Secure Shell (SSH) backdoor on developers’ mac…
3h
Csoonline
Cursor removes malicious Claude Code extension after SSH backdoor attempt
A malicious version of Anthropic’s Claude Code extension distributed through the Cursor marketplace attempted to install a persistent Secure Shell (SSH) backdoor on developers’ mac…
3h
Securityweek
Malicious Claude Code Extension Served in Cursor Supply Chain Attack
The extension performed host reconnaissance and attempted to create a reverse SSH tunnel. securityweek.com/">SecurityWeek.
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Published Nov 2, 2026
What to know
- A malicious version of Anthropic’s Claude Code extension distributed through the Cursor marketplace attempted to install a persistent Secure Shell (SSH) backdoor on developers’ machines, potentially giving attackers remote access to systems holding source code...S1
- The extension performed host reconnaissance and attempted to create a reverse SSH tunnel. securityweek.com/">SecurityWeek.S2
Timeline · newest first
Sources · 2 citations
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