Description officielle (NVD)

MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, validate_url_for_ssrf has a backslash authority confusion because it interprets the authority differently from the Requests connection layer in the header-based Jira and Confluence URL authentication flow. A crafted URL can validate as an external hostname while the HTTP client connects to an internal host, permitting server-side requests to protected network resources. 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-hgcf-4mq8-5266 , Exploit, Vendor Advisory
https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-hgcf-4mq8-5266 , Exploit, Vendor Advisory

En bref

Éditeur	mcp-atlassian
Produit	mcp_atlassian
Publiée le	22/09/2026
Modifiée le	28/09/2026
CVSS	8.8 (v4.0)
EPSS	0,32 % (centile 24)
CWE	CWE-918

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS : probabilité estimée d'exploitation dans les 30 prochains jours.