{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-5029 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-5029 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-5029 is a high-severity code injection vulnerability in Code Runner MCP Server, published on 12 May 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-2026-5029 and fix it if it is affected.\n\nWhat it is: CVE-2026-5029 is a high-severity code injection vulnerability in Code Runner MCP Server, published on 12 May 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-5029 in the wild and no public exploit code.\n\nAffected product: Code Runner MCP Server. No package-level version data is available, so check the vendor advisory linked from the reference page.\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-2026-5029/ (Markdown: https://insights.sbomify.com/CVE-2026-5029/index.md)","id":"CVE-2026-5029","markdown":"https://insights.sbomify.com/CVE-2026-5029/index.md","name":"CVE-2026-5029","record":{"aliases":["GHSA-jv4w-6p47-rhcx"],"analysis":{"component_type":"developer_tool","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":true,"product_category":"Code Runner MCP Server","requires_auth":"none","summary":"Unauthenticated attackers can execute arbitrary code via the run-code tool when the server is configured with HTTP transport.","user_interaction":"not_required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERT-PL","cpe":[],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-306","name":"Missing Authentication for Critical Functionality"}],"description":"A remote code execution vulnerability exists in Code Runner MCP Server when run with the --transport http option, which exposes the /mcp JSON-RPC endpoint without authentication on port 3088. An unauthenticated remote attacker can invoke the run-code MCP tool to supply arbitrary source code and execute it via child_process.exec() using the specified language interpreter. This allows execution of arbitrary code with the privileges of the user running the server. This vulnerability has not been fixed and might affect the project in all versions.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":"2026-07-20","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-07-20T11:43:06Z","kind":"github_poc","ref":"https://github.com/0x00phantom-hat/CVE-2026-5029-Exploit","stars":0,"title":null}],"tier":"poc_unverified"},"has_fix":null,"headline":"RCE in Code Runner MCP Server","id":"CVE-2026-5029","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":0,"n_references":1,"next":{"headline":"Totolink NR1800X Telnet Service cstecgi.cgi NTPSyncWithHost command injection","id":"CVE-2026-5030"},"packages":[],"prev":{"headline":"Eight Day Week Print Workflow \u003c= 1.2.6 - Authenticated (Subscriber+) SQL Injection via 'title' Parameter","id":"CVE-2026-5028"},"products":["Code Runner MCP Server"],"published":"2026-05-12","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"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":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-05-12","vendors":["Code Runner MCP Server"]},"summary":"Unauthenticated attackers can execute arbitrary code via the run-code tool when the server is configured with HTTP transport.","url":"https://insights.sbomify.com/CVE-2026-5029/"}