CVE Watch29 sept 2026

CVE-2026-77258

MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, upload_attachment in s

CVSS

7.7

Alto

EPSS

0.3%

p26

KEV

—

Exploit Today

0-100

Publicado: 22 sept 2026 · Última mod.: 29 sept 2026 · CWE-22

EPSS · 30d

0.3%EPSS · 30 días0.5%

2026-09-232026-10-20

Descripción técnica

MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to 0.22.0, upload_attachment in src/mcp_atlassian/confluence/attachments.py accepts a caller-controlled file_path and opens the selected server-local file without restricting it to the workspace. A permitted Confluence MCP caller can upload the file as an attachment and disclose data readable by the server process. This issue is fixed in version 0.22.0.

Referencias oficiales

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