diff --git a/doc/release-notes/rl-2511.section.md b/doc/release-notes/rl-2511.section.md
index f4b6cd2d766b..d707fd1eb6c0 100644
--- a/doc/release-notes/rl-2511.section.md
+++ b/doc/release-notes/rl-2511.section.md
@@ -26,6 +26,8 @@
 
 - `base16-builder` node package has been removed due to lack of upstream maintenance.
 
+- `python3Packages.bjoern` has been removed, as the upstream is unmaintained and it depends on a 14-year-old version of http-parser with numerous vulnerabilities.
+
 - `buildGoModule` now warns if `<pkg>.passthru.overrideModAttrs` is lost during the overriding of its result packages.
 
 - `gentium` package now provides `Gentium-*.ttf` files, and not `GentiumPlus-*.ttf` files like before. The font identifiers `Gentium Plus*` are available in the `gentium-plus` package, and if you want to use the more recently updated package `gentium` [by sil](https://software.sil.org/gentium/), you should update your configuration files to use the `Gentium` font identifier.
diff --git a/pkgs/development/python-modules/bjoern/default.nix b/pkgs/development/python-modules/bjoern/default.nix
deleted file mode 100644
index f6fb503578e9..000000000000
--- a/pkgs/development/python-modules/bjoern/default.nix
+++ /dev/null
@@ -1,39 +0,0 @@
-{
-  lib,
-  buildPythonPackage,
-  fetchFromGitHub,
-  libev,
-  python,
-  setuptools,
-}:
-
-buildPythonPackage rec {
-  pname = "bjoern";
-  version = "3.2.2";
-  pyproject = true;
-
-  src = fetchFromGitHub {
-    owner = "jonashaag";
-    repo = "bjoern";
-    tag = version;
-    hash = "sha256-drFLM6GsgrM8atQDxmb3/1bpj+C1WetQLjNbZqCTzog=";
-    fetchSubmodules = true; # fetch http-parser and statsd-c-client submodules
-  };
-
-  build-system = [ setuptools ];
-
-  buildInputs = [ libev ];
-
-  checkPhase = ''
-    ${python.interpreter} tests/keep-alive-behaviour.py 2>/dev/null
-    ${python.interpreter} tests/test_wsgi_compliance.py
-  '';
-
-  meta = with lib; {
-    homepage = "https://github.com/jonashaag/bjoern";
-    description = "Screamingly fast Python 2/3 WSGI server written in C";
-    changelog = "https://github.com/jonashaag/bjoern/blob/${src.tag}/CHANGELOG";
-    license = licenses.bsd2;
-    maintainers = with maintainers; [ cmcdragonkai ];
-  };
-}
diff --git a/pkgs/top-level/python-aliases.nix b/pkgs/top-level/python-aliases.nix
index c99c14e31519..e50caf0a211c 100644
--- a/pkgs/top-level/python-aliases.nix
+++ b/pkgs/top-level/python-aliases.nix
@@ -109,6 +109,7 @@ mapAliases ({
   bedup = throw "bedup was removed because it was broken and abandoned upstream"; # added 2023-02-04
   bip_utils = bip-utils; # 2023-10-08
   bitcoin-price-api = throw "bitcoin-price-api has been removed, it was using setuptools 2to3 translation feautre, which has been removed in setuptools 58"; # added 2022-02-15
+  bjoern = throw "'bjoern' has been removed, as the upstream repository was unmaintained and it was using libraries with severe security issues."; # Added 2025-09-01
   bkcharts = throw "'bkcharts' has been removed as the upstream repository was archived in 2018"; # added 2025-08-26
   blessings = throw "blessings has been removed in favor of blessed, as it was unmaintained"; # added 2024-08-20
   BlinkStick = blinkstick; # added 2023-02-19
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index c8eed1c249d8..ee78ffe7ac19 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -1955,8 +1955,6 @@ self: super: with self; {
 
   bizkaibus = callPackage ../development/python-modules/bizkaibus { };
 
-  bjoern = callPackage ../development/python-modules/bjoern { };
-
   bk7231tools = callPackage ../development/python-modules/bk7231tools { };
 
   black = callPackage ../development/python-modules/black { };