{"answers":{"affected":"2 open source packages ship an affected version, including webpack-dev-server. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-30359 exists.","fix":"Upgrade webpack-dev-server to 5.2.1 or later.","what":"CVE-2025-30359 is a medium-severity vulnerability in webpack-dev-server, published on 3 Jun 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2025-30359 and fix it if it is affected.\n\nWhat it is: CVE-2025-30359 is a medium-severity vulnerability in webpack-dev-server, published on 3 Jun 2025. An attacker can exploit it over the internet without logging in, 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-2025-30359 exists.\n\nAffected packages and fixed versions:\n- webpack-dev-server (npm): affected all versions; fixed in 5.2.1\n- webpack-dev-server (npm): affected all versions; fixed in 5.2.1\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-2025-30359/ (Markdown: https://insights.sbomify.com/CVE-2025-30359/index.md)","id":"CVE-2025-30359","markdown":"https://insights.sbomify.com/CVE-2025-30359/index.md","name":"CVE-2025-30359","record":{"aliases":["CLEANSTART-2026-VG68470","CLSA-2026-1774398064","CLSA-2026-1784769495","CLSA-2026-1784769529","GHSA-4v9v-hfq4-rm2v","MINI-2fx7-q59f-h942","MINI-xh7m-vh48-mw2g","ROOT-APP-NPM-CVE-2025-30359"],"analysis":{"component_type":"developer_tool","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"webpack-dev-server","requires_auth":"none","summary":"Attackers can steal source code from developers using webpack-dev-server by accessing a malicious website, requiring knowledge of the port and script path.","user_interaction":"required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"webpack-dev-server","vendor":"webpack.js"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-749","name":"Exposed Dangerous Method or Function"}],"description":"webpack-dev-server allows users to use webpack with a development server that provides live reloading. Prior to version 5.2.1, webpack-dev-server users' source code may be stolen when they access a malicious web site. Because the request for classic script by a script tag is not subject to same origin policy, an attacker can inject a malicious script in their site and run the script. Note that the attacker has to know the port and the output entrypoint script path. Combined with prototype pollution, the attacker can get a reference to the webpack runtime variables. By using `Function::toString` against the values in `__webpack_modules__`, the attacker can get the source code. Version 5.2.1 contains a patch for the issue.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"webpack-dev-server users' source code may be stolen when they access a malicious web site","id":"CVE-2025-30359","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"information_disclosure","year":"2025"},"n_packages":2,"n_references":2,"next":{"headline":"webpack-dev-server users' source code may be stolen when they access a malicious web site with non-Chromium based browser","id":"CVE-2025-30360"},"packages":[{"ecosystem":"npm","fixed":["5.2.1"],"introduced":["0"],"last_affected":[],"package":"webpack-dev-server","purl":null,"source":"GHSA-4v9v-hfq4-rm2v"},{"ecosystem":"npm","fixed":["5.2.1"],"introduced":["0"],"last_affected":[],"package":"webpack-dev-server","purl":"pkg:npm/webpack-dev-server","source":"GHSA-4v9v-hfq4-rm2v"}],"prev":{"headline":"Mesop Class Pollution vulnerability leads to DoS and Jailbreak attacks","id":"CVE-2025-30358"},"products":["webpack-dev-server"],"published":"2025-06-03","related":[{"cvss_score":8.2,"headline":"webpack-dev-server vulnerable to cross-origin WebSocket access via proxied upgrades","id":"CVE-2026-112085","kev_date_added":null,"published":"2026-10-22"},{"cvss_score":7.5,"headline":"Missing Origin Validation in webpack-dev-server","id":"CVE-2018-14732","kev_date_added":null,"published":"2018-09-21"},{"cvss_score":6.5,"headline":"webpack-dev-server users' source code may be stolen when they access a malicious web site with non-Chromium based browser","id":"CVE-2025-30360","kev_date_added":null,"published":"2025-06-03"},{"cvss_score":5.3,"headline":"webpack-dev-server vulnerable to information disclosure via Host validation bypass in the open-editor endpoint","id":"CVE-2026-114348","kev_date_added":null,"published":"2026-10-22"},{"cvss_score":5.3,"headline":"webpack-dev-server vulnerable to denial of service via a malformed Host or Origin header","id":"CVE-2026-14631","kev_date_added":null,"published":"2026-07-03"},{"cvss_score":5.3,"headline":"webpack-dev-server vulnerable to HMR WebSocket interception via permissive user proxies","id":"CVE-2026-9595","kev_date_added":null,"published":"2026-06-15"},{"cvss_score":5.3,"headline":"webpack-dev-server vulnerable to cross-origin source code exposure on non-HTTPS origins","id":"CVE-2026-6402","kev_date_added":null,"published":"2026-05-12"}],"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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-06-03","vendors":["webpack"]},"summary":"Attackers can steal source code from developers using webpack-dev-server by accessing a malicious website, requiring knowledge of the port and script path.","url":"https://insights.sbomify.com/CVE-2025-30359/"}