{"answers":{"affected":"2 open source packages ship an affected version, including expressfs.","exploited":"There is no known exploitation of GHSA-mxmj-84q8-34r7 in the wild and no public exploit code.","fix":"No fix has been published for GHSA-mxmj-84q8-34r7 yet. Limit exposure of the affected software until one is available.","what":"GHSA-mxmj-84q8-34r7 is a command injection vulnerability in expressfs, published on 3 Sep 2020. It can be exploited over the network, with no action from the victim."},"fix_prompt":"Check this codebase for GHSA-mxmj-84q8-34r7 and fix it if it is affected.\n\nWhat it is: GHSA-mxmj-84q8-34r7 is a command injection vulnerability in expressfs, published on 3 Sep 2020. It can be exploited over the network, with no action from the victim.\nExploitation: There is no known exploitation of GHSA-mxmj-84q8-34r7 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- expressfs (npm): affected all versions; no fix listed\n- expressfs (npm): affected all versions; no fix listed\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/GHSA-mxmj-84q8-34r7/ (Markdown: https://insights.sbomify.com/GHSA-mxmj-84q8-34r7/index.md)","id":"GHSA-mxmj-84q8-34r7","markdown":"https://insights.sbomify.com/GHSA-mxmj-84q8-34r7/index.md","name":"GHSA-mxmj-84q8-34r7","record":{"aliases":[],"analysis":{"component_type":"library","fix_type":"no_fix_stated","impacts":["code_execution"],"network_reachable":"yes","non_default_config":false,"product_category":"Node.js file system library","requires_auth":"unknown","summary":"Attackers can execute arbitrary system commands via unvalidated input in expressfs API endpoints, requiring immediate replacement of the library.","user_interaction":"not_required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":null,"cpe":[],"cvss":{"score":null,"severity":null,"source":null,"vector":null,"version":null},"cwes":[],"description":"All versions of `expressfs` are vulnerable to Command Injection. The package does not validate user input on several API endpoints, allowing attackers to run arbitrary commands in the system. The affected endpoints are: `expressfs.appendFile`,  `expressfs.cp`, `expressfs.create` and `expressfs.rmdir`.\n\n## Recommendation\n\nNo fix is currently available. Consider using an alternative module until a fix is made available.","ecosystems":["npm"],"exploits":{"exploitdb":null,"first_seen":null,"github_poc":null,"max_poc_stars":null,"metasploit":null,"nuclei":null,"refs":[],"tier":null},"has_fix":false,"headline":"Command Injection in expressfs","id":"GHSA-mxmj-84q8-34r7","indexable":true,"kev":null,"kind":"advisory","links":{"ecosystem":"npm","product":null,"products":[],"type":"command_injection","year":"2020"},"n_packages":2,"n_references":null,"packages":[{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":[],"package":"expressfs","purl":null,"source":"GHSA-mxmj-84q8-34r7"},{"ecosystem":"npm","fixed":[],"introduced":["0"],"last_affected":[],"package":"expressfs","purl":"pkg:npm/expressfs","source":"GHSA-mxmj-84q8-34r7"}],"products":null,"published":"2020-09-03","related":[],"sources":[{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":null,"updated":null,"vendors":null},"summary":"Attackers can execute arbitrary system commands via unvalidated input in expressfs API endpoints, requiring immediate replacement of the library.","url":"https://insights.sbomify.com/GHSA-mxmj-84q8-34r7/"}