{"answers":{"affected":"4 open source packages ship an affected version, including next. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-44579 in the wild and no public exploit code.","fix":"Upgrade next to a fixed version for your release line: 15.5.16 or 16.2.5.","what":"CVE-2026-44579 is a high-severity denial of service vulnerability in Vercel Next.js, published on 13 May 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-2026-44579 and fix it if it is affected.\n\nWhat it is: CVE-2026-44579 is a high-severity denial of service vulnerability in Vercel Next.js, published on 13 May 2026. 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-2026-44579 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- next (npm): affected from 15.0.0; fixed in 15.5.16\n- next (npm): affected from 15.0.0; fixed in 15.5.16\n- next (npm): affected from 16.0.0; fixed in 16.2.5\n- next (npm): affected from 16.0.0; fixed in 16.2.5\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-2026-44579/ (Markdown: https://insights.sbomify.com/CVE-2026-44579/index.md)","id":"CVE-2026-44579","markdown":"https://insights.sbomify.com/CVE-2026-44579/index.md","name":"CVE-2026-44579","record":{"aliases":["CLEANSTART-2026-WQ90566","CLEANSTART-2026-XA53672","GHSA-mg66-mrh9-m8jx","MINI-c8cw-cjr3-4fq3","MINI-qrwp-8pv4-2fr8","MINI-vxmc-cp99-x64h","MINI-whj6-68wj-xvf9","ROOT-APP-NPM-CVE-2026-44579"],"analysis":{"component_type":"web_application","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":true,"product_category":"Next.js framework","requires_auth":"none","summary":"Attackers can cause denial of service in Next.js apps using Cache Components by exhausting server connections via crafted POST requests.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"next.js","vendor":"vercel"}],"cvss":{"score":7.5,"severity":"high","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"cwes":[{"id":"CWE-833","name":"Deadlock"},{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Next.js is a React framework for building full-stack web applications. From  to before 15.5.16 and 16.2.5, applications using Partial Prerendering through the Cache Components feature can be vulnerable to connection exhaustion through crafted POST requests to a server action. In affected configurations, a malicious request can trigger a request-body handling deadlock that leaves connections open for an extended period, consuming file descriptors and server capacity until legitimate users are denied service. This vulnerability is fixed in 15.5.16 and 16.2.5.","ecosystems":["npm"],"exploits":{"exploitdb":0,"first_seen":"2025-03-31","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2025-03-31T17:30:28Z","kind":"github_poc","ref":"https://github.com/iamfarzad/fbcounsulting_v2","stars":0,"title":"ARCHIVED: FBC v2 consulting website draft. Deprecated. Vulnerable to CVE-2026-44579 (Next.js Cache DoS)."}],"tier":"poc_unverified"},"has_fix":true,"headline":"Next.js: Denial of Service via connection exhaustion in applications using Cache Components","id":"CVE-2026-44579","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"npm","product":"vercel:next.js","products":["vercel:next.js"],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":1,"next":{"headline":"Next.js: Cross-site scripting in beforeInteractive scripts with untrusted input","id":"CVE-2026-44580"},"packages":[{"ecosystem":"npm","fixed":["15.5.16"],"introduced":["15.0.0"],"last_affected":[],"package":"next","purl":null,"source":"GHSA-mg66-mrh9-m8jx"},{"ecosystem":"npm","fixed":["15.5.16"],"introduced":["15.0.0"],"last_affected":[],"package":"next","purl":"pkg:npm/next","source":"GHSA-mg66-mrh9-m8jx"},{"ecosystem":"npm","fixed":["16.2.5"],"introduced":["16.0.0"],"last_affected":[],"package":"next","purl":null,"source":"GHSA-mg66-mrh9-m8jx"},{"ecosystem":"npm","fixed":["16.2.5"],"introduced":["16.0.0"],"last_affected":[],"package":"next","purl":"pkg:npm/next","source":"GHSA-mg66-mrh9-m8jx"}],"prev":{"headline":"Next.js: Server-side request forgery in applications using WebSocket upgrades","id":"CVE-2026-44578"},"products":["next.js"],"published":"2026-05-13","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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-08-13","vendors":["vercel"]},"summary":"Attackers can cause denial of service in Next.js apps using Cache Components by exhausting server connections via crafted POST requests.","url":"https://insights.sbomify.com/CVE-2026-44579/"}