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Anthropic Slack MCP Server Data Exfiltration via Link Unfurling

severity
critical
date
Affecting

  • All default deployments of Anthropic Slack MCP Server

CVE
CVE-2025-34072
CVE type
Information Disclosure
CVSS
9.3
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:H/SI:H/SA:H
Credit
wunderwuzzi of Embrace The Red