{"answers":{"affected":"3 open source packages ship an affected version, including hackney. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-47075 exists.","fix":"Upgrade hackney to 4.0.1 or later.","what":"CVE-2026-47075 is a medium-severity vulnerability in benoitc hackney, published on 25 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-47075 and fix it if it is affected.\n\nWhat it is: CVE-2026-47075 is a medium-severity vulnerability in benoitc hackney, published on 25 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-47075 exists.\n\nAffected packages and fixed versions:\n- hackney (Hex): affected all versions; fixed in 4.0.1\n- hackney (Hex): affected all versions; fixed in 4.0.1\n- hackney (Hex): affected from 0.13.1; fixed in 4.0.1\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-2026-47075/ (Markdown: https://insights.sbomify.com/CVE-2026-47075/index.md)","id":"CVE-2026-47075","markdown":"https://insights.sbomify.com/CVE-2026-47075/index.md","name":"CVE-2026-47075","record":{"aliases":["EEF-CVE-2026-47075","GHSA-j9wq-vxxc-94wf"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_modify","security_bypass"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Erlang HTTP client","requires_auth":"none","summary":"Attackers can inject CRLF sequences into URLs to split HTTP requests or inject headers, affecting applications using the hackney library.","user_interaction":"required","vuln_class":"other"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"EEF","cpe":[{"product":"hackney","vendor":"benoitc"}],"cvss":{"score":6.8,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N","version":"4.0"},"cwes":[{"id":"CWE-93","name":"Improper Neutralization of CRLF Sequences"}],"description":"Improper Neutralization of CRLF Sequences vulnerability in benoitc hackney allows HTTP Request Splitting. hackney does not percent-encode carriage return (\\r) or line feed (\\n) characters in the URL query component before constructing the HTTP/1.1 request target. Characters outside the grammar defined in RFC 3986 Section 3.4 must be percent-encoded, but hackney_url:make_url/3 passes the query binary directly without validation or escaping. An attacker who can control all or part of a URL passed to hackney can inject raw CRLF sequences into the query string, which are then sent as HTTP line breaks in the request target. This enables injection of arbitrary HTTP headers or splitting of the HTTP request.\n\nThis issue affects hackney: from 0.13.1 before 4.0.1.","ecosystems":["Hex"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"weaponised"},"has_fix":true,"headline":"CR/LF injection in query parameter in hackney","id":"CVE-2026-47075","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Hex","product":null,"products":[],"type":"other","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"SSRF allowlist bypass via percent-encoded host in hackney","id":"CVE-2026-47076"},"packages":[{"ecosystem":"Hex","fixed":["4.0.1"],"introduced":["0"],"last_affected":[],"package":"hackney","purl":null,"source":"GHSA-j9wq-vxxc-94wf"},{"ecosystem":"Hex","fixed":["4.0.1"],"introduced":["0"],"last_affected":[],"package":"hackney","purl":"pkg:hex/hackney","source":"GHSA-j9wq-vxxc-94wf"},{"ecosystem":"Hex","fixed":["4.0.1"],"introduced":["0.13.1"],"last_affected":[],"package":"hackney","purl":"pkg:hex/hackney","source":"EEF-CVE-2026-47075"}],"prev":{"headline":"ex_aws_sns SigningCertURL not validated in verify_message/1","id":"CVE-2026-47074"},"products":["hackney"],"published":"2026-05-25","related":[{"cvss_score":8.7,"headline":"Infinite loop in Alt-Svc header parser in hackney","id":"CVE-2026-47066","kev_date_added":null,"published":"2026-05-25"},{"cvss_score":8.7,"headline":"Atom table exhaustion via unrecognized URL schemes in hackney","id":"CVE-2026-47067","kev_date_added":null,"published":"2026-05-25"},{"cvss_score":8.7,"headline":"Unbounded memory consumption in WebSocket client in hackney","id":"CVE-2026-47073","kev_date_added":null,"published":"2026-05-25"},{"cvss_score":8.2,"headline":"SOCKS5 TLS upgrade ignores caller timeout in hackney","id":"CVE-2026-47071","kev_date_added":null,"published":"2026-05-25"},{"cvss_score":8.2,"headline":"Unbounded body accumulation in HTTP/3 response loop in hackney","id":"CVE-2026-47077","kev_date_added":null,"published":"2026-05-25"},{"cvss_score":6.9,"headline":"CRLF injection in WebSocket upgrade request in hackney","id":"CVE-2026-47072","kev_date_added":null,"published":"2026-05-25"},{"cvss_score":6.9,"headline":"SSRF allowlist bypass via percent-encoded host in hackney","id":"CVE-2026-47076","kev_date_added":null,"published":"2026-05-25"}],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"Erlang Ecosystem Foundation","prefix":"EEF"},{"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-24","vendors":["benoitc"]},"summary":"Attackers can inject CRLF sequences into URLs to split HTTP requests or inject headers, affecting applications using the hackney library.","url":"https://insights.sbomify.com/CVE-2026-47075/"}