{"answers":{"affected":"2 open source packages ship an affected version, including hackney.","exploited":"There is no known exploitation of CVE-2025-3864 in the wild and no public exploit code.","fix":"Upgrade hackney to 1.24.0 or later.","what":"CVE-2025-3864 is a low-severity denial of service vulnerability in hackney, published on 28 May 2025. 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-2025-3864 and fix it if it is affected.\n\nWhat it is: CVE-2025-3864 is a low-severity denial of service vulnerability in hackney, published on 28 May 2025. 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-2025-3864 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- hackney (Hex): affected all versions; fixed in 1.24.0\n- hackney (Hex): affected all versions; fixed in 1.24.0\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-2025-3864/ (Markdown: https://insights.sbomify.com/CVE-2025-3864/index.md)","id":"CVE-2025-3864","markdown":"https://insights.sbomify.com/CVE-2025-3864/index.md","name":"CVE-2025-3864","record":{"aliases":["GHSA-9fm9-hp7p-53mf"],"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":"Remote attackers can exhaust connection pools by triggering 307 redirects, causing denial of service in applications using the hackney library.","user_interaction":"required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"CERT-PL","cpe":[],"cvss":{"score":2.3,"severity":"low","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-772","name":"Missing Release of Resource after Effective Lifetime"}],"description":"Hackney fails to properly release HTTP connections to the pool after handling 307 Temporary Redirect responses. Remote attackers can exploit this to exhaust connection pools, causing denial of service in applications using the library.\nFix for this issue has been included in 1.24.0 release.","ecosystems":["Hex"],"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":"Connection pool exhaustion in hackney","id":"CVE-2025-3864","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Hex","product":null,"products":[],"type":"denial_of_service","year":"2025"},"n_packages":2,"n_references":3,"next":{"headline":"Add Google +1 (Plus one) social share Button \u003c= 1.0.0 - Cross-Site Request Forgery to Stored Cross-Site Scripting","id":"CVE-2025-3866"},"packages":[{"ecosystem":"Hex","fixed":["1.24.0"],"introduced":["0"],"last_affected":[],"package":"hackney","purl":null,"source":"GHSA-9fm9-hp7p-53mf"},{"ecosystem":"Hex","fixed":["1.24.0"],"introduced":["0"],"last_affected":[],"package":"hackney","purl":"pkg:hex/hackney","source":"GHSA-9fm9-hp7p-53mf"}],"prev":{"headline":"Missing authorization in Post Carousel Slider for Elementor","id":"CVE-2025-3863"},"products":["hackney"],"published":"2025-05-28","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":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-01-26","vendors":["hackney"]},"summary":"Remote attackers can exhaust connection pools by triggering 307 redirects, causing denial of service in applications using the hackney library.","url":"https://insights.sbomify.com/CVE-2025-3864/"}