CVE-2026-47076

CVE-2026-47076 affects the hackney HTTP client (from 0.13.0 up to, but not including, 4.0.1). The issue1 arises because hackney_url:normalize/2 decodes the host after parsing, while OTP’s uri_string:parse/1 and inet:parse_address/1 do not decode percent-escapes, allowing a crafted URL such as htt...

CVE-2026-47066

CVE-2026-47066 describes an Infinite Loop in the Alt-Svc header parser of benoitc’s hackney. The vulnerable component is the Alt-Svc response header parser (src/hackney_altsvc.erl); when parse_token/2 receives certain inputs, it may return the input unchanged, and skip_comma/1 can fail to progres...

CVE-2026-47072

CVE-2026-47072 affects hackney versions 2.0.0–4.0.0, where the WebSocket upgrade path is vulnerable to CRLF injection. The upgrade code copies caller-supplied host, path, headers (ExtraHeaders), and protocols options into the internal ws_data structure and then concatenates them into the HTTP/1.1...

CVE-2026-47075

CVE-2026-47075 describes a CRLF injection in Hackney’s URL query handling. Hackney does not percent-encode CR/LF characters in the query string before forming the HTTP/1.1 request target, allowing an attacker who controls the URL to inject raw CRLF sequences and potentially perform HTTP header in...

CVE-2026-47067

Affected software: hackney (Erlang HTTP client). Vulnerability description: 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 maxes out at 1,048,576 entries. An att...

CVE-2026-47069

CVE-2026-47069 describes a CRLF Injection in the Hackney library. The vulnerability arises from hackney_cookie:setcookie/3: Name/Value are checked for CRLF, but the domain and path options are concatenated into the output iolist without validation. An attacker controlling either option (e.g., Hos...

CVE-2026-47070

The vulnerability CVE-2026-47070 affects the Hackney HTTP client. It specifically concerns the HTTP/3 redirect handler (src/hackney_h3.erl) which forwards the original request headers to the redirect target without any cross-origin checking when follow_redirect is enabled. This causes Authorizati...

CVE-2026-47073

CVE-2026-47073 affects hackney WebSocket client (src/hackney_ws.erl) causing unbounded memory growth via three paths: read_handshake_response/3 accumulates an unbounded buffer due to lack of size cap; parse_payload/9 and parse_active_payload/8 do not enforce a maximum frame payload length; and fr...

CVE-2026-47071

The vulnerability CVE-2026-47071 affects benoitc hackney (from 0.10.0 up to 4.0.0). The SOCKS5 transport (src/hackney_socks5.erl) forwards the caller timeout through SOCKS5 negotiation but upgrades to TLS with ssl:connect/2, which defaults to an infinite timeout. The Timeout in scope at the call ...

CVE-2026-47077

The CVE affects hackney (versions 2.0.0–4.0.0) due to an unbounded in-memory accumulation in hackney_h3:await_response_loop/6, where HTTP/3 response chunks are buffered without a cap. A malicious server can keep sending small chunks, preventing loop termination and exhausting the BEAM heap, leadi...