CVE-2026-27825: Critical Unauthenticated RCE and SSRF in mcp-atlassian
On February 24, 2026, sooperset, the mcp-atlassian project maintainer, released fixes for a critical vulnerability in mcp-atlassian, tracked as CVE-2026-27825. The flaw arises from missing directory confinement and inadequate path traversal validation in the Confluence attachment download tools which could allow a remote (network-adjacent), unauthenticated threat actor to write files to arbitrary paths, enabling local privilege escalation and remote code execution.