CVE-2026-32688

Allocation of Resources Without Limits or Throttling vulnerability in elixir-plug plugcowboy allows unauthenticated remote denial of service via atom table exhaustion. Plug.Cowboy.Conn.conn/1 in lib/plug/cowboy/conn.ex calls String.toatom/1 on the value returned by :cowboyreq.scheme/1. For HTTP/2...

CVE-2026-32688 Atom table exhaustion via HTTP/2 :scheme pseudo-header in plug_cowboy

Allocation of Resources Without Limits or Throttling vulnerability in elixir-plug plugcowboy allows unauthenticated remote denial of service via atom table exhaustion. Plug.Cowboy.Conn.conn/1 in lib/plug/cowboy/conn.ex calls String.toatom/1 on the value returned by :cowboyreq.scheme/1. For HTTP/2...

PT-2026-35422

Name of the Vulnerable Software and Affected Versions plug cowboy versions 2.0.0 through 2.8.0 Description An unauthenticated remote attacker can cause a denial of service via atom table exhaustion. In HTTP/2 connections, the Plug.Cowboy.Conn.conn/1 function in lib/plug/cowboy/conn.ex calls...