CVE-2026-77266 MCP Atlassian: Path traversal in upload_attachment allows arbitrary file read and exfiltration via MCP tool call

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, uploadattachment accepts absolute paths and traversal sequences without constraining the resolved path to the server workspace. An MCP caller with attachment access can read a chosen...

CVE-2026-77266 MCP Atlassian: Path traversal in upload_attachment allows arbitrary file read and exfiltration via MCP tool call

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, uploadattachment accepts absolute paths and traversal sequences without constraining the resolved path to the server workspace. An MCP caller with attachment access can read a chosen...

CVE-2026-77266

The MCP Atlassian Model Context Protocol server (versions prior to 0.22.0 ) contains a path traversal vulnerability within the upload_attachment function. The flaw occurs because the application accepts absolute paths and traversal sequences without restricting the resolved path to the server wor...

CVE-2026-77266 MCP Atlassian: Path traversal in upload_attachment allows arbitrary file read and exfiltration via MCP tool call

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, uploadattachment accepts absolute paths and traversal sequences without constraining the resolved path to the server workspace. An MCP caller with attachment access can read a chosen...

CVE-2026-77260

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, the Confluence and Jira uploadattachment implementations accept an unconstrained filepath and open the referenced server-local file. A permitted MCP caller can upload sensitive host...

CVE-2026-77258

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, uploadattachment in src/mcpatlassian/confluence/attachments.py accepts a caller-controlled filepath and opens the selected server-local file without restricting it to the workspace. A...

CVE-2026-77257

The MCP Atlassian Model Context Protocol server for Confluence and Jira is vulnerable to arbitrary file path traversal in its HTTP-exposed upload tools prior to version 0.22.0 . The root cause is that the server passes a caller-provided file_path to local file operations without restricting acces...

CVE-2026-77257 MCP Atlassian: HTTP upload tools accept arbitrary server-local file paths

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, HTTP-exposed Jira and Confluence upload tools pass a caller-provided filepath to local file operations without restricting it to the workspace. A remote MCP caller with tool access ca...

EUVD-2026-84741

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, HTTP-exposed Jira and Confluence upload tools pass a caller-provided filepath to local file operations without restricting it to the workspace. A remote MCP caller with tool access ca...

CVE-2026-77257 MCP Atlassian: HTTP upload tools accept arbitrary server-local file paths

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, HTTP-exposed Jira and Confluence upload tools pass a caller-provided filepath to local file operations without restricting it to the workspace. A remote MCP caller with tool access ca...

CVE-2026-77257 MCP Atlassian: HTTP upload tools accept arbitrary server-local file paths

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, HTTP-exposed Jira and Confluence upload tools pass a caller-provided filepath to local file operations without restricting it to the workspace. A remote MCP caller with tool access ca...

CVE-2026-77260 MCP Atlassian: Arbitrary local file READ via unconstrained file_path in upload_attachment (Confluence + Jira)

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, the Confluence and Jira uploadattachment implementations accept an unconstrained filepath and open the referenced server-local file. A permitted MCP caller can upload sensitive host...

CVE-2026-77260 MCP Atlassian: Arbitrary local file READ via unconstrained file_path in upload_attachment (Confluence + Jira)

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, the Confluence and Jira uploadattachment implementations accept an unconstrained filepath and open the referenced server-local file. A permitted MCP caller can upload sensitive host...

EUVD-2026-84630

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, the Confluence and Jira uploadattachment implementations accept an unconstrained filepath and open the referenced server-local file. A permitted MCP caller can upload sensitive host...

CVE-2026-77260 MCP Atlassian: Arbitrary local file READ via unconstrained file_path in upload_attachment (Confluence + Jira)

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, the Confluence and Jira uploadattachment implementations accept an unconstrained filepath and open the referenced server-local file. A permitted MCP caller can upload sensitive host...

CVE-2026-77260

The MCP Atlassian Model Context Protocol server for Confluence and Jira is vulnerable to arbitrary local file read in versions prior to 0.22.0 . The vulnerability exists because the upload_attachment implementations accept an unconstrained file_path , allowing a permitted MCP caller to open and u...

CVE-2026-77258 MCP Atlassian: Arbitrary file read/exfiltration via upload_attachment missing validate_safe_path()

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, uploadattachment in src/mcpatlassian/confluence/attachments.py accepts a caller-controlled filepath and opens the selected server-local file without restricting it to the workspace. A...

CVE-2026-77258

The MCP Atlassian Model Context Protocol server is vulnerable to arbitrary file read and exfiltration in versions prior to 0.22.0 . The root cause is that the upload_attachment method in src/mcp_atlassian/confluence/attachments.py fails to call validate_safe_path(), allowing a permitted caller (o...

CVE-2026-77258 MCP Atlassian: Arbitrary file read/exfiltration via upload_attachment missing validate_safe_path()

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, uploadattachment in src/mcpatlassian/confluence/attachments.py accepts a caller-controlled filepath and opens the selected server-local file without restricting it to the workspace. A...

CVE-2026-77258 MCP Atlassian: Arbitrary file read/exfiltration via upload_attachment missing validate_safe_path()

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, uploadattachment in src/mcpatlassian/confluence/attachments.py accepts a caller-controlled filepath and opens the selected server-local file without restricting it to the workspace. A...