Release v1.20.4

CHANGELOG.md

@@ -192,9 +192,13 @@ It also introduces a new compiler option called `:module_definition`, which if t
 
 You can enable it by setting `elixirc_options: [module_definition: :interpreted]` in your `mix.exs`.
 
-## v1.20.4-dev
+## v1.20.4 (2026-08-28)
 
-### 1. Bug fixes
+### 1. Security
+
+  * [List] Avoid recursion when invalid charlists are given to `List.to_string/1` or `List.to_charlist/1` (CVE-2026-75758, GHSA-jf5q-v438-665c)
+
+### 2. Bug fixes
 
 #### Elixir
 

VERSION

@@ -1 +1 @@
-1.20.3
+1.20.4

bin/elixir

@@ -6,7 +6,7 @@
 
 set -e
 
-ELIXIR_VERSION=1.20.3
+ELIXIR_VERSION=1.20.4
 
 if [ $# -eq 0 ] || { [ $# -eq 1 ] && { [ "$1" = "--help" ] || [ "$1" = "-h" ]; }; }; then
   cat <<USAGE >&2

bin/elixir.bat

@@ -4,7 +4,7 @@
 :: SPDX-FileCopyrightText: 2021 The Elixir Team
 :: SPDX-FileCopyrightText: 2012 Plataformatec
 
-set ELIXIR_VERSION=1.20.3
+set ELIXIR_VERSION=1.20.4
 
 if    ""%1""==""""                if ""%2""=="""" goto documentation
 if /I ""%1""==""--help""          if ""%2""=="""" goto documentation