{"answers":{"affected":"","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19964 exists.","fix":"No fix has been published for CVE-2026-19964 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-19964 is a medium-severity code injection vulnerability in Jij-Inc Jij-MCP-Server, published on 16 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-19964 and fix it if it is affected.\n\nWhat it is: CVE-2026-19964 is a medium-severity code injection vulnerability in Jij-Inc Jij-MCP-Server, published on 16 Aug 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-19964 exists.\n\nAffected product: Jij-Inc Jij-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-2026-19964/ (Markdown: https://insights.sbomify.com/CVE-2026-19964/index.md)","id":"CVE-2026-19964","markdown":"https://insights.sbomify.com/CVE-2026-19964/index.md","name":"CVE-2026-19964","record":{"aliases":["GHSA-g33m-cxj9-5gvx"],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"MCP server library","requires_auth":"low_privilege","summary":"Remote attackers can execute arbitrary code via the PythonREPL.run function in the Jij-MCP-Server library due to improper input validation.","user_interaction":"required","vuln_class":"code_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"VulDB","cpe":[],"cvss":{"score":5.1,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P","version":"4.0"},"cwes":[{"id":"CWE-94","name":"Improper Control of Generation of Code"},{"id":"CWE-74","name":"Improper Neutralization of Special Elements in Output Used by a Downstream Component"}],"description":"A vulnerability was found in Jij-Inc Jij-MCP-Server 0.1.0. This affects the function PythonREPL.run of the file jij_mcp/python_repr.py of the component jm_check. The manipulation of the argument code results in code injection. It is possible to launch the attack remotely. The exploit has been made public and could be used. The project was informed of the problem early through an issue report but has not responded yet.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":null,"headline":"Jij-Inc Jij-MCP-Server jm_check python_repr.py PythonREPL.run code injection","id":"CVE-2026-19964","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"code_injection","year":"2026"},"n_packages":0,"n_references":5,"next":{"headline":"automad Password Reset Endpoint UserController.php requestPasswordResetToken response discrepancy","id":"CVE-2026-19965"},"packages":[],"prev":{"headline":"Edimax EW-7478APC stainfo command injection","id":"CVE-2026-19963"},"products":["Jij-MCP-Server"],"published":"2026-08-16","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)"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-18","vendors":["Jij-Inc"]},"summary":"Remote attackers can execute arbitrary code via the PythonREPL.run function in the Jij-MCP-Server library due to improper input validation.","url":"https://insights.sbomify.com/CVE-2026-19964/"}