Description officielle (NVD)
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, header-supplied Jira or Confluence URLs are resolved and validated before the HTTP client resolves the hostname again for the connection. An unauthenticated caller can use a DNS-rebinding hostname that returns a public address during validation and an internal address during connection, causing requests to internal or metadata services. The advisory traces the vulnerable input and processing flow through X-Atlassian-Jira-Url, X-Atlassian-Confluence-Url, validate_url_for_ssrf, and DNS rebinding, which identify the affected entry points, controls, and code paths. This issue is fixed in version 0.22.0.
Références
- https://github.com/sooperset/mcp-atlassian/commit/b041733473f95119dd539542a43c280737a8e460 , Patch
- https://github.com/sooperset/mcp-atlassian/pull/1448 , Issue Tracking, Patch
- https://github.com/sooperset/mcp-atlassian/releases/tag/v0.22.0 , Release Notes
- https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-49xv-9743-pw8w , Exploit, Vendor Advisory
- https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-49xv-9743-pw8w , Exploit, Vendor Advisory
En bref
| Éditeur | mcp-atlassian |
| Produit | mcp_atlassian |
| Publiée le | 22/09/2026 |
| Modifiée le | 29/09/2026 |
| CVSS | 7.5 (v3.1) |
| EPSS | 0,27 % (centile 18) |
| CWE | CWE-918 |
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS : probabilité estimée d'exploitation dans les 30 prochains jours.
Produits concernés
mcp-atlassian · mcp_atlassian
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