{"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-2026-47067 exists.","fix":"Upgrade hackney to 4.0.1 or later.","what":"CVE-2026-47067 is a high-severity denial of service vulnerability in benoitc hackney, published on 25 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-2026-47067 and fix it if it is affected.\n\nWhat it is: CVE-2026-47067 is a high-severity denial of service vulnerability in benoitc hackney, published on 25 May 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-2026-47067 exists.\n\nAffected packages and fixed versions:\n- hackney (Hex): affected from 2.0.0; fixed in 4.0.1\n- hackney (Hex): affected from 2.0.0; fixed in 4.0.1\n- hackney (Hex): affected from 2.0.0; 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-2026-47067/ (Markdown: https://insights.sbomify.com/CVE-2026-47067/index.md)","id":"CVE-2026-47067","markdown":"https://insights.sbomify.com/CVE-2026-47067/index.md","name":"CVE-2026-47067","record":{"aliases":["EEF-CVE-2026-47067","GHSA-9653-rcfr-5c62"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Erlang HTTP client","requires_auth":"none","summary":"An attacker can crash the Erlang VM by exhausting the atom table via unrecognized URL schemes in the hackney library.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"EEF","cpe":[{"product":"hackney","vendor":"benoitc"}],"cvss":{"score":8.7,"severity":"high","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-770","name":"Allocation of Resources Without Limits or Throttling"}],"description":"Allocation of Resources Without Limits or Throttling vulnerability in benoitc hackney allows Flooding. The URL parser in src/hackney_url.erl converts every unrecognized URL scheme to a permanent BEAM atom via binary_to_atom/2. BEAM atoms are never garbage-collected and the atom table defaults to a hard limit of 1,048,576 entries. An attacker who can supply URLs with attacker-chosen scheme prefixes — directly as request targets, as configured webhook URLs, or via Location headers followed during redirects — can exhaust the atom table and crash the entire BEAM VM with system_limit.\n\nThis issue affects hackney: from 2.0.0 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":"Atom table exhaustion via unrecognized URL schemes in hackney","id":"CVE-2026-47067","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Hex","product":null,"products":[],"type":"denial_of_service","year":"2026"},"n_packages":3,"n_references":4,"next":{"headline":"Cross-session PubSub topic injection via URL parameter in phoenix_storybook","id":"CVE-2026-47068"},"packages":[{"ecosystem":"Hex","fixed":["4.0.1"],"introduced":["2.0.0"],"last_affected":[],"package":"hackney","purl":"pkg:hex/hackney","source":"EEF-CVE-2026-47067"},{"ecosystem":"Hex","fixed":["4.0.1"],"introduced":["2.0.0"],"last_affected":[],"package":"hackney","purl":null,"source":"GHSA-9653-rcfr-5c62"},{"ecosystem":"Hex","fixed":["4.0.1"],"introduced":["2.0.0"],"last_affected":[],"package":"hackney","purl":"pkg:hex/hackney","source":"GHSA-9653-rcfr-5c62"}],"prev":{"headline":"Infinite loop in Alt-Svc header parser in hackney","id":"CVE-2026-47066"},"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":"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":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-05-27","vendors":["benoitc"]},"summary":"An attacker can crash the Erlang VM by exhausting the atom table via unrecognized URL schemes in the hackney library.","url":"https://insights.sbomify.com/CVE-2026-47067/"}