{"answers":{"affected":"2 open source packages ship an affected version, including parcel-bundler. It affects 1 product.","exploited":"There is no known exploitation of CVE-2018-14731 in the wild and no public exploit code.","fix":"Upgrade parcel-bundler to 1.10.0 or later.","what":"CVE-2018-14731 is a high-severity vulnerability in n/a, published on 21 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2018-14731 and fix it if it is affected.\n\nWhat it is: CVE-2018-14731 is a high-severity vulnerability in n/a, published on 21 Sep 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2018-14731 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- parcel-bundler (npm): affected all versions; fixed in 1.10.0\n- parcel-bundler (npm): affected all versions; fixed in 1.10.0\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-2018-14731/ (Markdown: https://insights.sbomify.com/CVE-2018-14731/index.md)","id":"CVE-2018-14731","markdown":"https://insights.sbomify.com/CVE-2018-14731/index.md","name":"CVE-2018-14731","record":{"aliases":["GHSA-37q6-576q-vgr7"],"analysis":{"component_type":"developer_tool","fix_type":"patch","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Parcel bundler","requires_auth":"none","summary":"Attackers can steal developer code by connecting to the Parcel HMR WebSocket server from any origin due to missing origin checks.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"mitre","cpe":[{"product":"parcel","vendor":"parceljs"}],"cvss":{"score":7.5,"severity":"high","source":"nvd","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.0"},"cwes":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"An issue was discovered in HMRServer.js in Parcel parcel-bundler. Attackers are able to steal developer's code because the origin of requests is not checked by the WebSocket server, which is used for HMR (Hot Module Replacement). Anyone can receive the HMR message sent by the WebSocket server via a ws://127.0.0.1 connection (with a random TCP port number) from any origin. The random port number can be found by connecting to http://127.0.0.1 and reading the \"new WebSocket\" line in the source code.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"Missing Origin Validation in parcel-bundler","id":"CVE-2018-14731","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"information_disclosure","year":"2018"},"n_packages":2,"n_references":3,"next":{"headline":"Missing Origin Validation in webpack-dev-server","id":"CVE-2018-14732"},"packages":[{"ecosystem":"npm","fixed":["1.10.0"],"introduced":["0"],"last_affected":[],"package":"parcel-bundler","purl":null,"source":"GHSA-37q6-576q-vgr7"},{"ecosystem":"npm","fixed":["1.10.0"],"introduced":["0"],"last_affected":[],"package":"parcel-bundler","purl":"pkg:npm/parcel-bundler","source":"GHSA-37q6-576q-vgr7"}],"prev":{"headline":"Missing Origin Validation in browserify-hmr","id":"CVE-2018-14730"},"products":["n/a"],"published":"2018-09-21","related":[{"cvss_score":6.5,"headline":"Parcel has an Origin Validation Error vulnerability","id":"CVE-2025-56648","kev_date_added":null,"published":"2025-09-17"}],"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":"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)"}],"ssvc":{"automatable":null,"exploitation":null,"technical_impact":null},"state":"PUBLISHED","updated":"2024-08-05","vendors":["n/a"]},"summary":"Attackers can steal developer code by connecting to the Parcel HMR WebSocket server from any origin due to missing origin checks.","url":"https://insights.sbomify.com/CVE-2018-14731/"}