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PYSEC-2026-2621 MCP Atlassian has SSRF via unvalidated X-Atlassian-Jira-Url / X-Atlassian-Confluence-Url headers

🗓️ 13 Jul 2026 14:36:41Reported by GoogleType 
osv
 osv
🔗 osv.dev👁 1 Views

Unauthenticated SSRF in MCP Atlassian via unvalidated Jira headers to attacker URL.

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13 Jul 2026 16:32Current
6.3Medium risk
Vulners AI Score6.3
CVSS 3.18.2
EPSS0.14325
1