CVE-2026-77246

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, an HTTP transport deployment with READONLYMODE=false accepts a request without an Authorization identity and permits attacker-controlled Atlassian service headers, including...

CVE-2026-77246 MCP Atlassian: MCP HTTP Client Server-Local File Exfiltration via Unvalidated Attachment Upload Path

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, an HTTP transport deployment with READONLYMODE=false accepts a request without an Authorization identity and permits attacker-controlled Atlassian service headers, including...

CVE-2026-77246

MCP Atlassian , a Model Context Protocol server for Confluence and Jira, is vulnerable to server-local file exfiltration in versions prior to 0.22.0 . In an HTTP transport deployment where READ_ONLY_MODE=false , the server accepts requests without an Authorization identity and allows attacker-con...

EUVD-2026-84771

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, an HTTP transport deployment with READONLYMODE=false accepts a request without an Authorization identity and permits attacker-controlled Atlassian service headers, including...

CVE-2026-77248

Versions of MCP Atlassian prior to 0.22.0 are vulnerable to an unauthenticated arbitrary local file read. The streamable HTTP transport accepts requests without a user identity and defaults to operator credentials, while the upload_attachment function accepts an unrestricted file_path . An unauth...

EUVD-2026-84759

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, JiraUserMixin.lookupuserbypermissions uses the module-level requests.get function instead of the fetcher's protected session. A caller-controlled public Jira URL can redirect that...

EUVD-2026-84758

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, confluenceuploadattachment opens a caller-selected server-local file without checking that the resolved path remains in the workspace. A caller can upload environment files,...

CVE-2026-77259

The MCP Atlassian Model Context Protocol server (for Confluence and Jira) is vulnerable to an arbitrary file read issue prior to version 0.22.0 . The confluence_upload_attachment function fails to verify that a caller-selected server-local file path remains within the intended workspace. This all...

EUVD-2026-84757

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, the OAuth fallback token directory and JSON file are created without explicit owner-only modes. Local users or processes with access through the resulting group or world permission bi...

CVE-2026-77247 MCP Atlassian: Arbitrary server-local file upload to Jira/Confluence attachments via unrestricted file_path parameters

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, Jira and Confluence upload tools interpret caller-controlled path arguments on the MCP server and open those files before sending them as attachments. In remote or multi-user...

CVE-2026-77247 MCP Atlassian: Arbitrary server-local file upload to Jira/Confluence attachments via unrestricted file_path parameters

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, Jira and Confluence upload tools interpret caller-controlled path arguments on the MCP server and open those files before sending them as attachments. In remote or multi-user...

CVE-2026-77247 MCP Atlassian: Arbitrary server-local file upload to Jira/Confluence attachments via unrestricted file_path parameters

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, Jira and Confluence upload tools interpret caller-controlled path arguments on the MCP server and open those files before sending them as attachments. In remote or multi-user...

CVE-2026-77247

The MCP Atlassian Model Context Protocol server (versions prior to 0.22.0 ) is vulnerable to an arbitrary server-local file upload on Jira and Confluence. The root cause is the interpretation of caller-controlled path arguments within the file_path and file_paths parameters. Specifically, the too...

CVE-2026-77269 MCP Atlassian: Path traversal in upload_attachment allows arbitrary file read (incomplete fix for CVE-2026-27825)

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, the remediation for CVE-2026-27825 protects download destinations but does not constrain source paths used by attachment uploads. A caller can provide an absolute or traversal filepat...

CVE-2026-77269

The MCP Atlassian Model Context Protocol server for Confluence and Jira is vulnerable to a path traversal flaw in the upload_attachment function prior to version 0.22.0 . While a previous fix for CVE-2026-27825 protected download destinations, it failed to constrain source paths for uploads. An a...

EUVD-2026-84747

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-2026-77271

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, validatesafepath defaults its base directory to os.getcwd, and affected Confluence attachment call sites omit basedir, allowing attacker-selected writes within the working directory...

CVE-2026-77252

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, caller-supplied projectsfilter and spacesfilter arguments can replace administrator-configured allowlists, and caller-provided project or space clauses can suppress the configured...

CVE-2026-77265

MCP Atlassian is a Model Context Protocol MCP server for Atlassian products Confluence and Jira. Prior to 0.22.0, header-supplied Jira or Confluence URLs are resolved and validated before the HTTP client resolves the hostname again for the connection. An unauthenticated caller can use a...

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...