{"answers":{"affected":"8 open source packages ship an affected version, including next. It affects 1 product.","exploited":"There is no known exploitation of CVE-2025-30218 in the wild and no public exploit code.","fix":"Upgrade next to a fixed version for your release line: 12.3.6, 13.5.10, 14.2.26 or 15.2.4.","what":"CVE-2025-30218 is a low-severity vulnerability in Vercel Next.js, published on 2 Apr 2025. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2025-30218 and fix it if it is affected.\n\nWhat it is: CVE-2025-30218 is a low-severity vulnerability in Vercel Next.js, published on 2 Apr 2025. 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-2025-30218 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- next (npm): affected from 12.3.5; fixed in 12.3.6\n- next (npm): affected from 12.3.5; fixed in 12.3.6\n- next (npm): affected from 13.5.9; fixed in 13.5.10\n- next (npm): affected from 13.5.9; fixed in 13.5.10\n- next (npm): affected from 14.2.25; fixed in 14.2.26\n- next (npm): affected from 14.2.25; fixed in 14.2.26\n- next (npm): affected from 15.2.3; fixed in 15.2.4\n- next (npm): affected from 15.2.3; fixed in 15.2.4\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-2025-30218/ (Markdown: https://insights.sbomify.com/CVE-2025-30218/index.md)","id":"CVE-2025-30218","markdown":"https://insights.sbomify.com/CVE-2025-30218/index.md","name":"CVE-2025-30218","record":{"aliases":["CLEANSTART-2026-HK16178","GHSA-223j-4rm8-mrmf"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Next.js framework","requires_auth":"none","summary":"Next.js leaks internal middleware subrequest IDs to external hosts during fetch requests, potentially exposing sensitive internal state information.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"next.js","vendor":"vercel"}],"cvss":{"score":1.7,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U","version":"4.0"},"cwes":[{"id":"CWE-200","name":"Exposure of Sensitive Information to an Unauthorized Actor"}],"description":"Next.js is a React framework for building full-stack web applications. To mitigate CVE-2025-29927, Next.js validated the x-middleware-subrequest-id which persisted across multiple incoming requests. However, this subrequest ID is sent to all requests, even if the destination is not the same host as the Next.js application. Initiating a fetch request to a third-party within Middleware will send the x-middleware-subrequest-id to that third party. This vulnerability is fixed in 12.3.6, 13.5.10, 14.2.26, and 15.2.4.","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":"Next.js may leak x-middleware-subrequest-id to external hosts","id":"CVE-2025-30218","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"vercel:next.js","products":["vercel:next.js"],"type":"information_disclosure","year":"2025"},"n_packages":8,"n_references":2,"next":{"headline":"RabbitMQ has XSS Vulnerability in an Error Message in Management UI","id":"CVE-2025-30219"},"packages":[{"ecosystem":"npm","fixed":["12.3.6"],"introduced":["12.3.5"],"last_affected":[],"package":"next","purl":null,"source":"GHSA-223j-4rm8-mrmf"},{"ecosystem":"npm","fixed":["12.3.6"],"introduced":["12.3.5"],"last_affected":[],"package":"next","purl":"pkg:npm/next","source":"GHSA-223j-4rm8-mrmf"},{"ecosystem":"npm","fixed":["13.5.10"],"introduced":["13.5.9"],"last_affected":[],"package":"next","purl":null,"source":"GHSA-223j-4rm8-mrmf"},{"ecosystem":"npm","fixed":["13.5.10"],"introduced":["13.5.9"],"last_affected":[],"package":"next","purl":"pkg:npm/next","source":"GHSA-223j-4rm8-mrmf"},{"ecosystem":"npm","fixed":["14.2.26"],"introduced":["14.2.25"],"last_affected":[],"package":"next","purl":null,"source":"GHSA-223j-4rm8-mrmf"},{"ecosystem":"npm","fixed":["14.2.26"],"introduced":["14.2.25"],"last_affected":[],"package":"next","purl":"pkg:npm/next","source":"GHSA-223j-4rm8-mrmf"},{"ecosystem":"npm","fixed":["15.2.4"],"introduced":["15.2.3"],"last_affected":[],"package":"next","purl":null,"source":"GHSA-223j-4rm8-mrmf"},{"ecosystem":"npm","fixed":["15.2.4"],"introduced":["15.2.3"],"last_affected":[],"package":"next","purl":"pkg:npm/next","source":"GHSA-223j-4rm8-mrmf"}],"prev":{"headline":"Frappe has possibility of SQL injection due to improper validations","id":"CVE-2025-30217"},"products":["next.js"],"published":"2025-04-02","related":[{"cvss_score":9.1,"headline":"Authorization Bypass in Next.js Middleware","id":"CVE-2025-29927","kev_date_added":null,"published":"2025-03-21"},{"cvss_score":8.6,"headline":"Next.js: Server-side request forgery in applications using WebSocket upgrades","id":"CVE-2026-44578","kev_date_added":null,"published":"2026-05-13"},{"cvss_score":8.3,"headline":"Next.js: Server-Side Request Forgery in Image Optimization","id":"CVE-2026-94483","kev_date_added":null,"published":"2026-10-02"},{"cvss_score":8.3,"headline":"Next.js: Middleware / Proxy bypass in App Router applications using Turbopack and single locale","id":"CVE-2026-64642","kev_date_added":null,"published":"2026-07-27"},{"cvss_score":8.3,"headline":"Next.js: Server-Side Request Forgery in rewrites via attacker-controlled destination hostname","id":"CVE-2026-64645","kev_date_added":null,"published":"2026-07-27"},{"cvss_score":8.3,"headline":"Next.js: Server-Side Request Forgery in Server Actions on Custom Servers","id":"CVE-2026-64649","kev_date_added":null,"published":"2026-07-27"},{"cvss_score":8.2,"headline":"Next.js: Denial of Service in App Router using Server Actions","id":"CVE-2026-64641","kev_date_added":null,"published":"2026-07-27"}],"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":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2025-10-13","vendors":["vercel"]},"summary":"Next.js leaks internal middleware subrequest IDs to external hosts during fetch requests, potentially exposing sensitive internal state information.","url":"https://insights.sbomify.com/CVE-2025-30218/"}