Description officielle (NVD)

MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, the Confluence and Jira upload_attachment implementations accept an unconstrained file_path and open the referenced server-local file. A permitted MCP caller can upload sensitive host files to an Atlassian destination and then retrieve their contents. The advisory traces the vulnerable input and processing flow through upload_attachment, file_path, and CVE-2026-27825, 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-f4p7-qx46-wc5j , Exploit, Mitigation, Vendor Advisory
https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-f4p7-qx46-wc5j , Exploit, Mitigation, Vendor Advisory

En bref

Éditeur	mcp-atlassian
Produit	mcp_atlassian
Publiée le	22/09/2026
Modifiée le	29/09/2026
CVSS	8.3 (v4.0)
EPSS	0,35 % (centile 27)
CWE	CWE-22

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:H/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.