CVE-2026-8468 Unbounded buffer accumulation in multipart header parsing causes denial of service in plug

Allocation of Resources Without Limits or Throttling vulnerability in plugproject plug allows denial of service via unbounded buffer accumulation in multipart header parsing. 'Elixir.Plug.Conn':readpartheaders/2 in lib/plug/conn.ex does not obey its :length parameter. There is no upper bound on t...

CVE-2026-8466

CVE-2026-8466 affects the Cowboy web server (ninenines) prior to 2.15.0. The issue is an unbounded memory growth vulnerability in multipart header parsing: cowboy_req:read_part/3 accumulates request bytes into a Buffer without an upper-bound check, and when cow_multipart:parse_headers/2 returns m...