{"id":"CVE-2026-58229","summary":"Unbounded HTTP/1 response-header and chunked-trailer accumulation in Mint causes memory-exhaustion DoS","details":"Allocation of resources without limits vulnerability in elixir-mint mint allows a remote HTTP server to exhaust memory on the client host and cause a denial of service.\n\nThe Mint.HTTP1.decode_headers/5 and Mint.HTTP1.decode_trailer_headers/4 functions in lib/mint/http1.ex accumulate every parsed response header and chunked-trailer field into a per-request list that persists across incoming TCP segments as request.headers_buffer, and only clear it when the terminating blank line is received. The section has no cap on the number of headers or on total bytes, and the underlying :erlang.decode_packet(:httph_bin, binary, []) parser is invoked with an empty option list so its per-line and per-packet size limits also default to unlimited.\n\nA malicious HTTP server (reachable directly, via an attacker-controlled redirect, via SSRF, or via a man-in-the-middle) can stream complete header lines (or, after a chunked body, complete trailer lines) indefinitely without ever emitting the terminating blank line. The connection state grows without bound until the BEAM node is killed by the operating system's out-of-memory handler, taking down the entire application that uses Mint as an HTTP client.\n\nThis issue affects mint: from 0.1.0 before 1.9.2.","aliases":["EEF-CVE-2026-58229","GHSA-qrfr-wh4c-3qhw"],"modified":"2026-07-19T03:46:37.537275283Z","published":"2026-07-14T08:36:54.616Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58229.json","unresolved_ranges":[{"extracted_events":[{"introduced":"3e6de4bac4821b0eb4d6109e8b1f3fb6458792c8"},{"fixed":"566d702e6f29105f77522ca7aabb9f64f2f4e333"}],"source":"AFFECTED_FIELD"}],"cna_assigner":"EEF","cwe_ids":["CWE-770"]},"references":[{"type":"WEB","url":"https://cna.erlef.org/cves/CVE-2026-58229.html"},{"type":"WEB","url":"https://github.com"},{"type":"WEB","url":"https://osv.dev/vulnerability/EEF-CVE-2026-58229"},{"type":"WEB","url":"https://repo.hex.pm"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/58xxx/CVE-2026-58229.json"},{"type":"ADVISORY","url":"https://github.com/elixir-mint/mint/security/advisories/GHSA-qrfr-wh4c-3qhw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58229"},{"type":"FIX","url":"https://github.com/elixir-mint/mint/commit/566d702e6f29105f77522ca7aabb9f64f2f4e333"},{"type":"PACKAGE","url":"https://github.com/elixir-mint/mint"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/elixir-mint/mint","events":[{"introduced":"47889857fb36f07606ad9c2e52080d202d419058"},{"fixed":"d066c6685dca58fceb2e22e97a9266866b622bfc"},{"fixed":"566d702e6f29105f77522ca7aabb9f64f2f4e333"}],"database_specific":{"extracted_events":[{"introduced":"0.1.0"},{"fixed":"1.9.2"}],"source":["DESCRIPTION","REFERENCES"]}}],"versions":["v1.9.1","v1.9.0","v1.8.0","v1.7.1","v1.7.0","v1.6.2","v1.6.1","v1.6.0","v1.5.2","v1.5.1","v1.5.0","v1.4.2","v1.4.1","v1.4.0","v1.3.0","v1.2.1","v1.2.0","v1.1.0","v1.0.0","v0.5.0","v0.4.0","v0.2.1","v0.2.0","v0.1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-58229.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N"}]}