{"answers":{"affected":"2 open source packages ship an affected version, including react/http.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-84997 exists.","fix":"Upgrade react/http to 1.11.1 or later.","what":"CVE-2026-84997 is a high-severity denial of service vulnerability in reactphp http, published on 16 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-2026-84997 and fix it if it is affected.\n\nWhat it is: CVE-2026-84997 is a high-severity denial of service vulnerability in reactphp http, published on 16 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-2026-84997 exists.\n\nAffected packages and fixed versions:\n- react/http (Packagist): affected from 0.6.0; fixed in 1.11.1\n- react/http (Packagist): affected from 0.6.0; fixed in 1.11.1\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-2026-84997/ (Markdown: https://insights.sbomify.com/CVE-2026-84997/index.md)","id":"CVE-2026-84997","markdown":"https://insights.sbomify.com/CVE-2026-84997/index.md","name":"CVE-2026-84997","record":{"aliases":["GHSA-x424-64qh-5j54"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"ReactPHP HTTP library","requires_auth":"none","summary":"A malformed HTTP chunked body causes an infinite loop in the ReactPHP HTTP library, allowing attackers to freeze servers or clients via CPU exhaustion.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"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-835","name":"Loop with Unreachable Exit Condition"}],"description":"react/http is an event-driven, streaming HTTP client and server implementation for ReactPHP. From 0.6.0 until 1.11.1, React\\Http\\Io\\ChunkedDecoder could enter an infinite loop while processing a malformed Transfer-Encoding: chunked body because handleData required its buffer to shrink on every iteration. An incomplete terminal-chunk trailer without CRLF left the buffer unchanged after strpos returned false, and exactly two non-CRLF bytes after a completed non-terminal chunk bypassed both the error and wait guards. The affected decoder processes request bodies for React\\Http\\HttpServer and response bodies for React\\Http\\Browser, allowing a malicious client to freeze a server or a malicious or compromised server to freeze a client. A reverse proxy that normalizes inbound requests may protect the server direction but does not protect outbound Browser requests. This issue is fixed in version 1.11.1.","ecosystems":["Packagist"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"react/http: A malformed HTTP chunked body can lead to a denial-of-service and peg the CPU","id":"CVE-2026-84997","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Packagist","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":2,"n_references":3,"next":{"headline":"Pie Register Premium \u003c= 3.8.4.0 - Unauthenticated Arbitrary File Upload via piereg_file_upload AJAX Handler","id":"CVE-2026-84999"},"packages":[{"ecosystem":"Packagist","fixed":["1.11.1"],"introduced":["0.6.0"],"last_affected":[],"package":"react/http","purl":null,"source":"GHSA-x424-64qh-5j54"},{"ecosystem":"Packagist","fixed":["1.11.1"],"introduced":["0.6.0"],"last_affected":[],"package":"react/http","purl":"pkg:composer/react/http","source":"GHSA-x424-64qh-5j54"}],"prev":{"headline":"Qwik: Crashing any Qwik Server via Resource thenable","id":"CVE-2026-84994"},"products":["http"],"published":"2026-09-16","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)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-16","vendors":["reactphp"]},"summary":"A malformed HTTP chunked body causes an infinite loop in the ReactPHP HTTP library, allowing attackers to freeze servers or clients via CPU exhaustion.","url":"https://insights.sbomify.com/CVE-2026-84997/"}