{"answers":{"affected":"4 open source packages ship an affected version, including next.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-75604 exists.","fix":"Upgrade next to a fixed version for your release line: 15.5.24 or 16.3.3.","what":"CVE-2026-75604 is a critical path traversal vulnerability in vercel next.js, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-75604 and fix it if it is affected.\n\nWhat it is: CVE-2026-75604 is a critical path traversal vulnerability in vercel next.js, published on 1 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-75604 exists.\n\nAffected packages and fixed versions:\n- next (npm): affected from 13.4.0; fixed in 15.5.24\n- next (npm): affected from 13.4.0; fixed in 15.5.24\n- next (npm): affected from 16.0.0; fixed in 16.3.3\n- next (npm): affected from 16.0.0; fixed in 16.3.3\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-2026-75604/ (Markdown: https://insights.sbomify.com/CVE-2026-75604/index.md)","id":"CVE-2026-75604","markdown":"https://insights.sbomify.com/CVE-2026-75604/index.md","name":"CVE-2026-75604","record":{"aliases":["CLEANSTART-2026-LG90193","CLEANSTART-2026-TQ64674","CLSA-2026-1791974962","CLSA-2026-1792195714","CLSA-2026-1792195731","CLSA-2026-1792195754","CLSA-2026-1792195758","CLSA-2026-1792196700","CLSA-2026-1792196729","CLSA-2026-1792196731","CLSA-2026-1792196882","CLSA-2026-1792206274","CLSA-2026-1792206292","CLSA-2026-1792206327","CLSA-2026-1792206331","CLSA-2026-1792256966","CLSA-2026-1792256969","CLSA-2026-1792272207","CLSA-2026-1792272233","CLSA-2026-1792272249","CLSA-2026-1792272251","CLSA-2026-1792292983","CLSA-2026-1792293020","CLSA-2026-1792293021","CLSA-2026-1792293025","CLSA-2026-1792304694","CLSA-2026-1792304724","CLSA-2026-1792304744","CLSA-2026-1792304745","CLSA-2026-1792326279","CLSA-2026-1792326313","CLSA-2026-1792326317","CLSA-2026-1792326318","CLSA-2026-1792338219","CLSA-2026-1792338240","CLSA-2026-1792338242","CLSA-2026-1792338246","CLSA-2026-1792346471","CLSA-2026-1792346491","CLSA-2026-1792358572","CLSA-2026-1792358602","CLSA-2026-1792358604","CLSA-2026-1792358607","CLSA-2026-1792363962","CLSA-2026-1792363989","CLSA-2026-1792363990","CLSA-2026-1792364013","CLSA-2026-1792367392","CLSA-2026-1792367396","ECHO-c99a-939d-6275","GHSA-p293-qw3h-jr36","MINI-6jhj-g3wm-jwvf","MINI-fq94-vg7v-qhp3","MINI-gmwv-jh59-5h8f","MINI-m7x2-4vmh-hwxw","ROOT-APP-NPM-CVE-2026-75604"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["code_execution","data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Next.js framework","requires_auth":"none","summary":"Remote attackers can traverse cache paths on Windows Next.js servers to steal encryption keys and execute arbitrary code.","user_interaction":"not_required","vuln_class":"path_traversal"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":9,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-22","name":"Improper Limitation of a Pathname to a Restricted Directory"}],"description":"Next.js is a React framework for building full-stack web applications. From 13.4.0 until 15.5.24 and 16.3.3, Next.js applications using Pages Router or App Router without Cache Components on Windows-hosted servers do not consistently escape backslashes in route segments before constructing incremental-cache paths. In packages/next/src/shared/lib/router/utils/escape-path-delimiters.ts and packages/next/src/server/lib/incremental-cache/file-system-cache.ts, a remote request can supply encoded Windows path separators that traverse outside the intended cache root and expose private build data, including the server-reference-manifest encryption key. Disclosure of that key can enable remote code execution in the affected application. This issue is fixed in versions 15.5.24 and 16.3.3.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":"2026-08-25","github_poc":5,"max_poc_stars":178,"metasploit":1,"nuclei":0,"refs":[{"date":"2026-09-28T19:01:45Z","kind":"github_poc","ref":"https://github.com/ZeroDayEvil/CVE-2026-75604-PoC","stars":178,"title":"🛡 Official AI Security Tool module for CVE-2026-75604 (Next.js Windows Unauthenticated Remote Code Execution) with safe in-app execution, deep vulnerability validation, and DevSecOps-ready security auditing workflows."},{"date":"2026-08-25T19:06:37Z","kind":"github_poc","ref":"https://github.com/rafabd1/CVE-2026-75604-poc","stars":106,"title":"CVE-2026-75604 Next.js Windows RCE poc"},{"date":"2026-08-27T09:35:54Z","kind":"github_poc","ref":"https://github.com/e4zyy/Project-CVE-2026-75604","stars":3,"title":"A Python-based exploitation framework for CVE-2026-75604 that enables authorized penetration testers to validate Next.js Windows cache traversal vulnerabilities. Deploys reverse shells and webshells via path traversal, with built-in target verification and proxy support for seamless integration into standard pentest workflows."},{"date":"2026-08-26T11:48:32Z","kind":"github_poc","ref":"https://github.com/HackSpeak/CVE-2026-75604","stars":2,"title":"CVE-2026-75604 (Next.js Windows RCE) PoC - unauthenticated RCE via cache path traversal + forged Server Action; for authorized security testing"},{"date":"2026-08-26","kind":"metasploit","ref":"exploit/windows/http/nextjs_unauth_rce_cve_2026_75604","stars":null,"title":"Next.js Unauthenticated RCE on Windows Servers"},{"date":"2026-09-03T17:07:41Z","kind":"github_poc","ref":"https://github.com/FORTBRIDGE-UK/cve-2026-75604","stars":0,"title":"Research lab and exploit chain for CVE-2026-75604: path traversal in the Next.js incremental cache, to RCE on Windows."}],"tier":"weaponised"},"has_fix":true,"headline":"Next.js: Unauthenticated Remote Code Execution on windows-hosted servers","id":"CVE-2026-75604","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"path_traversal","year":"2026"},"n_packages":4,"n_references":5,"next":{"headline":"Frigate: WebSocket Missing Authorization — Viewer Can Execute Admin-Only Operations","id":"CVE-2026-75607"},"packages":[{"ecosystem":"npm","fixed":["15.5.24"],"introduced":["13.4.0"],"last_affected":[],"package":"next","purl":null,"source":"GHSA-p293-qw3h-jr36"},{"ecosystem":"npm","fixed":["15.5.24"],"introduced":["13.4.0"],"last_affected":[],"package":"next","purl":"pkg:npm/next","source":"GHSA-p293-qw3h-jr36"},{"ecosystem":"npm","fixed":["16.3.3"],"introduced":["16.0.0"],"last_affected":[],"package":"next","purl":null,"source":"GHSA-p293-qw3h-jr36"},{"ecosystem":"npm","fixed":["16.3.3"],"introduced":["16.0.0"],"last_affected":[],"package":"next","purl":"pkg:npm/next","source":"GHSA-p293-qw3h-jr36"}],"prev":{"headline":"OpenList: Authenticated arbitrary file write via Content-Disposition path traversal in SimpleHttp offline-download tool","id":"CVE-2026-75602"},"products":["next.js"],"published":"2026-09-01","related":[],"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":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"},{"class":"attribution","licence":"BSD-3-Clause","name":"Metasploit"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-09-04","vendors":["vercel"]},"summary":"Remote attackers can traverse cache paths on Windows Next.js servers to steal encryption keys and execute arbitrary code.","url":"https://insights.sbomify.com/CVE-2026-75604/"}