CVE-2026-27825
- Source
- https://cve.org/CVERecord?id=CVE-2026-27825
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-27825.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-27825
- Aliases
- Published
- 2026-03-10T18:53:41.964Z
- Modified
- 2026-04-10T05:38:40.321125Z
- Severity
-
- 9.0 (Critical) CVSS_V3 - CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
- Summary
- MCP Atlassian has an arbitrary file write leading to arbitrary code execution via unconstrained download_path in confluence_download_attachment
- Details
-
MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to version 0.17.0, the
confluence_download_attachmentMCP tool accepts adownload_pathparameter that is written to without any directory boundary enforcement. An attacker who can call this tool and supply or access a Confluence attachment with malicious content can write arbitrary content to any path the server process has write access to. Because the attacker controls both the write destination and the written content (via an uploaded Confluence attachment), this constitutes for arbitrary code execution (for example, writing a valid cron entry to/etc/cron.d/achieves code execution within one scheduler cycle with no server restart required). Version 0.17.0 fixes the issue. - Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-22", "CWE-73" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27825.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/27xxx/CVE-2026-27825.json
- https://github.com/sooperset/mcp-atlassian/security/advisories/GHSA-xjgw-4wvw-rgm4
- https://nvd.nist.gov/vuln/detail/CVE-2026-27825
- https://github.com/sooperset/mcp-atlassian/commit/52b9b0997681e87244b20d58034deae89c91631e
Affected packages
Git / github.com/sooperset/mcp-atlassian
Affected ranges
- Type
- GIT
- Repo
- https://github.com/sooperset/mcp-atlassian
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed