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PYSEC-2026-4104 MCP Atlassian: MCP HTTP Client Server-Local File Exfiltration via Unvalidated Attachment Upload Path

🗓️ 01 Oct 2026 16:38:34Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 2 Views

Unauthenticated remote file exfiltration in mcp-atlassian via unvalidated file paths.

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01 Oct 2026 17:45Current
6.1Medium risk
Vulners AI Score6.1
CVSS 3.17.4
EPSS0.00428
2