{"answers":{"affected":"3 open source packages ship an affected version, including mcp-atlassian. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27825 exists.","fix":"Upgrade mcp-atlassian to 0.17.0 or later.","what":"CVE-2026-27825 is a critical path traversal vulnerability in sooperset mcp-atlassian, published on 10 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-27825 and fix it if it is affected.\n\nWhat it is: CVE-2026-27825 is a critical path traversal vulnerability in sooperset mcp-atlassian, published on 10 Mar 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-27825 exists.\n\nAffected packages and fixed versions:\n- mcp-atlassian (PyPI): affected all versions; fixed in 0.17.0\n- mcp-atlassian (PyPI): affected all versions; fixed in 0.17.0\n- mcp-atlassian (PyPI): affected all versions; fixed in 0.17.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-27825/ (Markdown: https://insights.sbomify.com/CVE-2026-27825/index.md)","id":"CVE-2026-27825","markdown":"https://insights.sbomify.com/CVE-2026-27825/index.md","name":"CVE-2026-27825","record":{"aliases":["GHSA-xjgw-4wvw-rgm4","PYSEC-2026-408"],"analysis":{"component_type":"server_software","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"MCP Atlassian server","requires_auth":"low_privilege","summary":"An attacker can write arbitrary files to any path via the download_path parameter, leading to arbitrary code execution on the MCP Atlassian server.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"mcp_atlassian","vendor":"mcp-atlassian"}],"cvss":{"score":9.1,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-73","name":"External Control of File Name or Path"},{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"MCP Atlassian is a Model Context Protocol (MCP) server for Atlassian products (Confluence and Jira). Prior to version 0.17.0, the `confluence_download_attachment` MCP tool accepts a `download_path` parameter 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.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":"2026-02-26","github_poc":1,"max_poc_stars":7,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-02-26T10:09:32Z","kind":"github_poc","ref":"https://github.com/plutosecurity/MCPwnfluence","stars":7,"title":"Information about CVE-2026-27825 \u0026 CVE-2026-27826 discovered by Pluto Security and a bash script for identifying vulnerable mcp-atlassian instances allowing for automatic update to a fixed version. "}],"tier":"weaponised"},"has_fix":true,"headline":"MCP Atlassian has an arbitrary file write leading to arbitrary code execution via unconstrained download_path in confluence_download_attachment","id":"CVE-2026-27825","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":3,"n_references":2,"next":{"headline":"MCP Atlassian has SSRF via unvalidated X-Atlassian-Jira-Url / X-Atlassian-Confluence-Url headers","id":"CVE-2026-27826"},"packages":[{"ecosystem":"PyPI","fixed":["0.17.0"],"introduced":["0"],"last_affected":[],"package":"mcp-atlassian","purl":null,"source":"GHSA-xjgw-4wvw-rgm4"},{"ecosystem":"PyPI","fixed":["0.17.0"],"introduced":["0"],"last_affected":[],"package":"mcp-atlassian","purl":"pkg:pypi/mcp-atlassian","source":"GHSA-xjgw-4wvw-rgm4"},{"ecosystem":"PyPI","fixed":["0.17.0"],"introduced":["0"],"last_affected":[],"package":"mcp-atlassian","purl":"pkg:pypi/mcp-atlassian","source":"PYSEC-2026-408"}],"prev":{"headline":"calibre has IP Ban Bypass via X-Forwarded-For Header Spoofing","id":"CVE-2026-27824"},"products":["mcp-atlassian"],"published":"2026-03-10","related":[{"cvss_score":10,"headline":"[mcp-atlassian] Authentication bypass in HTTP transport: AtlassianOpaqueTokenVerifier accepts any non-empty token","id":"CVE-2026-77244","kev_date_added":null,"published":"2026-09-22"},{"cvss_score":9.1,"headline":"MCP Atlassian: Unauthenticated HTTP MCP requests can use globally configured Jira and Confluence credentials","id":"CVE-2026-77254","kev_date_added":null,"published":"2026-09-22"},{"cvss_score":8.8,"headline":"MCP Atlassian: ENABLED_TOOLS / Toolset authorization bypass","id":"CVE-2026-77243","kev_date_added":null,"published":"2026-09-22"},{"cvss_score":8.8,"headline":"MCP Atlassian: SSRF Protection Bypass","id":"CVE-2026-77274","kev_date_added":null,"published":"2026-09-22"},{"cvss_score":8.6,"headline":"MCP Atlassian: Unauthenticated arbitrary local file read via upload_attachment file_path, chained with missing auth on streamable-http transport","id":"CVE-2026-77248","kev_date_added":null,"published":"2026-09-22"},{"cvss_score":8.6,"headline":"MCP Atlassian: Arbitrary File Read \u0026 Exfiltration (Confused Deputy) in JIRA update_issue","id":"CVE-2026-77255","kev_date_added":null,"published":"2026-09-22"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-03-10","vendors":["sooperset"]},"summary":"An attacker can write arbitrary files to any path via the download_path parameter, leading to arbitrary code execution on the MCP Atlassian server.","url":"https://insights.sbomify.com/CVE-2026-27825/"}