{"answers":{"affected":"4 open source packages ship an affected version, including @remix-run/server-runtime and react-router.","exploited":"There is no known exploitation of CVE-2026-53663 in the wild and no public exploit code.","fix":"Upgrade @remix-run/server-runtime to 2.17.5 or later.","what":"CVE-2026-53663 is a low-severity vulnerability in @remix-run react-router, published on 22 Jun 2026. 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-2026-53663 and fix it if it is affected.\n\nWhat it is: CVE-2026-53663 is a low-severity vulnerability in @remix-run react-router, published on 22 Jun 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.\nExploitation: There is no known exploitation of CVE-2026-53663 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- @remix-run/server-runtime (npm): affected from 2.17.3; fixed in 2.17.5\n- @remix-run/server-runtime (npm): affected from 2.17.3; fixed in 2.17.5\n- react-router (npm): affected from 7.12.0; fixed in 7.15.1\n- react-router (npm): affected from 7.12.0; fixed in 7.15.1\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-2026-53663/ (Markdown: https://insights.sbomify.com/CVE-2026-53663/index.md)","id":"CVE-2026-53663","markdown":"https://insights.sbomify.com/CVE-2026-53663/index.md","name":"CVE-2026-53663","record":{"aliases":["CLSA-2026-1793120008","GHSA-84g9-w2xq-vcv6","MINI-fjrw-pf76-547w","ROOT-APP-NPM-CVE-2026-53663","openSUSE-SU-2026:11325-1"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["security_bypass"],"network_reachable":"yes","non_default_config":false,"product_category":"React Router library","requires_auth":"none","summary":"React Router's CSRF protection fails for PUT, PATCH, and DELETE requests, allowing potential cross-site request forgery bypasses in Framework Mode.","user_interaction":"required","vuln_class":"csrf"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":3.1,"severity":"low","source":"cna","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N","version":"3.1"},"cwes":[{"id":"CWE-352","name":"Cross-Site Request Forgery"}],"description":"React Router is a router for React. From 7.12.0 until 7.15.1, certain CSRF checks in React Router v7 Framework Mode were insufficient and run on POST requests, but were bypassed on PUT/PATCH/DELETE requests. This is a low severity vulnerability because modern browser protections (CORS preflight, SameSite cookies) already block the cross-origin attack vectors that this missing CSRF check would otherwise gate. This vulnerability is fixed in 7.15.1.","ecosystems":["npm","openSUSE:Tumbleweed"],"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":"React Router: `handleDocumentRequest` CSRF check covers `POST` only; PUT/PATCH/DELETE bypass","id":"CVE-2026-53663","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":null,"products":[],"type":"csrf","year":"2026"},"n_packages":5,"n_references":1,"next":{"headline":"React Router: Arbitrary Constructor Injection via deserializeErrors() in React Router SSR Hydration","id":"CVE-2026-53666"},"packages":[{"ecosystem":"npm","fixed":["2.17.5"],"introduced":["2.17.3"],"last_affected":[],"package":"@remix-run/server-runtime","purl":null,"source":"GHSA-84g9-w2xq-vcv6"},{"ecosystem":"npm","fixed":["2.17.5"],"introduced":["2.17.3"],"last_affected":[],"package":"@remix-run/server-runtime","purl":"pkg:npm/%40remix-run/server-runtime","source":"GHSA-84g9-w2xq-vcv6"},{"ecosystem":"npm","fixed":["7.15.1"],"introduced":["7.12.0"],"last_affected":[],"package":"react-router","purl":null,"source":"GHSA-84g9-w2xq-vcv6"},{"ecosystem":"npm","fixed":["7.15.1"],"introduced":["7.12.0"],"last_affected":[],"package":"react-router","purl":"pkg:npm/react-router","source":"GHSA-84g9-w2xq-vcv6"},{"ecosystem":"openSUSE:Tumbleweed","fixed":["23+0.f26ed5eab-49.1"],"introduced":["0"],"last_affected":[],"package":"agama-web-ui","purl":"pkg:rpm/opensuse/agama-web-ui\u0026distro=openSUSE%20Tumbleweed","source":"openSUSE-SU-2026:11325-1"}],"prev":{"headline":"immich: One-click account takeover via XSS in login page continue redirect","id":"CVE-2026-53662"},"products":["react-router","server-runtime"],"published":"2026-06-22","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":"CC BY 4.0","name":"SUSE","prefix":"openSUSE"},{"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":"2026-06-22","vendors":["@remix-run","remix-run"]},"summary":"React Router's CSRF protection fails for PUT, PATCH, and DELETE requests, allowing potential cross-site request forgery bypasses in Framework Mode.","url":"https://insights.sbomify.com/CVE-2026-53663/"}