Plug

Allocation of Resources Without Limits or Throttling vulnerability in plug_project plug allows denial of service via unbounded buffer accumulation in multipart header parsing. 'Elixir.Plug.Conn':read_part_headers/2 in lib/plug/conn.ex does not obey its :length parameter. There is no upper bound on the size of the accumulated buffer. By contrast, the sibling function read_part_body has an explicit byte_size(acc) > length guard that stops accumulation once a limit is reached. No such guard exists in read_part_headers. An unauthenticated remote attacker can exhaust server memory by sending a crafted multipart/form-data request, causing a denial of service. This issue affects plug from 1.4.0 before 1.15.4, 1.16.3, 1.17.1, 1.18.2, and 1.19.2.

Published: 2026-05-14T10:29:51.062Z
Updated: 2026-05-27T15:41:29.241Z

Elixir Plug Plug version All contains a Header Injection vulnerability in Connection that can result in Given a cookie value, Headers can be added. This attack appear to be exploitable via Crafting a value to be sent as a cookie. This vulnerability appears to have been fixed in >= 1.3.5 or ~> 1.2.5 or ~> 1.1.9 or ~> 1.0.6.

Published: 2018-12-20T20:00:00.000Z
Updated: 2024-09-17T00:40:42.841Z

Elixir Plug before v1.0.4, v1.1.7, v1.2.3 and v1.3.2 is vulnerable to arbitrary code execution in the deserialization functions of Plug.Session.

Published: 2017-07-13T20:00:00.000Z
Updated: 2024-08-05T21:53:06.256Z

Elixir Plug before v1.0.4, v1.1.7, v1.2.3 and v1.3.2 is vulnerable to null byte injection in the Plug.Static component, which may allow users to bypass filetype restrictions.

Published: 2017-07-13T20:00:00.000Z
Updated: 2024-08-05T21:53:06.279Z