diff --git a/pkgs/applications/networking/browsers/firefox/packages/firefox-esr-140.nix b/pkgs/applications/networking/browsers/firefox/packages/firefox-esr-140.nix
index f32269b032ba..3865f2915e0f 100644
--- a/pkgs/applications/networking/browsers/firefox/packages/firefox-esr-140.nix
+++ b/pkgs/applications/networking/browsers/firefox/packages/firefox-esr-140.nix
@@ -24,6 +24,19 @@ buildMozillaMach rec {
     maxSilent = 14400; # 4h, double the default of 7200s (c.f. #129212, #129115)
     license = lib.licenses.mpl20;
     mainProgram = "firefox";
+    identifiers = {
+      cpeParts = {
+        product = "firefox";
+        sw_edition = "esr";
+        update = "*";
+        vendor = "mozilla";
+        version = lib.removeSuffix "esr" version;
+      };
+      purlParts = {
+        type = "generic";
+        spec = "firefox@${lib.removeSuffix "esr" version}";
+      };
+    };
   };
   tests = {
     inherit (nixosTests) firefox-esr-140;
diff --git a/pkgs/applications/networking/browsers/firefox/packages/firefox-esr-153.nix b/pkgs/applications/networking/browsers/firefox/packages/firefox-esr-153.nix
index cf2b5008489e..d8d7c3050e38 100644
--- a/pkgs/applications/networking/browsers/firefox/packages/firefox-esr-153.nix
+++ b/pkgs/applications/networking/browsers/firefox/packages/firefox-esr-153.nix
@@ -25,6 +25,19 @@ buildMozillaMach rec {
     maxSilent = 14400; # 4h, double the default of 7200s (c.f. #129212, #129115)
     license = lib.licenses.mpl20;
     mainProgram = "firefox";
+    identifiers = {
+      cpeParts = {
+        product = "firefox";
+        sw_edition = "esr";
+        update = "*";
+        vendor = "mozilla";
+        version = lib.removeSuffix "esr" version;
+      };
+      purlParts = {
+        type = "generic";
+        spec = "firefox@${lib.removeSuffix "esr" version}";
+      };
+    };
   };
   tests = {
     inherit (nixosTests) firefox-esr-153;
diff --git a/pkgs/applications/networking/browsers/firefox/packages/firefox.nix b/pkgs/applications/networking/browsers/firefox/packages/firefox.nix
index ec7e0b3e8361..36feec6f8f27 100644
--- a/pkgs/applications/networking/browsers/firefox/packages/firefox.nix
+++ b/pkgs/applications/networking/browsers/firefox/packages/firefox.nix
@@ -30,6 +30,18 @@ buildMozillaMach rec {
     maxSilent = 14400; # 4h, double the default of 7200s (c.f. #129212, #129115)
     license = lib.licenses.mpl20;
     mainProgram = "firefox";
+    identifiers = {
+      cpeParts = {
+        inherit version;
+        product = "firefox";
+        update = "*";
+        vendor = "mozilla";
+      };
+      purlParts = {
+        type = "generic";
+        spec = "firefox@${version}";
+      };
+    };
   };
   tests = {
     inherit (nixosTests) firefox;