diff --git a/cveClientlib.js b/cveClientlib.js
index 0a050ff..4fcca59 100644
--- a/cveClientlib.js
+++ b/cveClientlib.js
@@ -5,7 +5,7 @@ class cveClient {
 	this.key = key;
 	this.url = url;
 	this.user_path = "/org/" + this.org + "/user/" + this.user;
-	this._version = "1.0.15";
+	this._version = "1.0.25";
     }
     /* PUT /cve/{id}/adp — the only ADP endpoint per CVE Services API spec
        See https://cveawg.mitre.org/api-docs/ */
@@ -22,6 +22,8 @@ class cveClient {
 	let path = "/cve/" + cve + "/cna";
 	if(rejected)
 	    path = "/cve/" + cve + "/reject";
+	if(!cnajson["x_generator"])
+	    cnajson["x_generator"] = {engine: "cveClient/" + this._version};
 	return this.putjson(path,opts,null,{cnaContainer:cnajson});
     }
     reservecve(amount,cve_year,batch_type) {
diff --git a/cveInterface.js b/cveInterface.js
index 2e9fd66..f5cddc7 100644
--- a/cveInterface.js
+++ b/cveInterface.js
@@ -639,10 +639,7 @@ async function download_json() {
       orgId: "00000000-0000-0000-0000-000000000000",
       shortName: "none",
     };
-    if (get_deep(client, "constructor.name") && client._version)
-      returnJSON["x_generator"] = {
-        engine: client.constructor.name + "/" + client._version,
-      };
+    returnJSON["x_generator"] = { engine: "cveClient/" + _version };
     $("#cveUpdateModal .cveupdate").attr("download", cve + ".json");
     let cson = encodeURIComponent(JSON.stringify(returnJSON));
     $("#cveUpdateModal .cveupdate").attr(
@@ -1817,10 +1814,7 @@ async function publish_cve() {
         orgId: client.userobj.org_UUID,
         shortName: client.org,
       };
-    if (get_deep(client, "constructor.name") && client._version)
-      pubcve["x_generator"] = {
-        engine: client.constructor.name + "/" + client._version,
-      };
+    pubcve["x_generator"] = { engine: "cveClient/" + _version };
     let cve = mr.cve_id;
     let ispublic = mr.state != "RESERVED";
     let rejected = false;
@@ -2079,10 +2073,7 @@ async function reject_cve(confirm) {
         orgId: client.userobj.org_UUID,
         shortName: client.org,
       };
-    if (get_deep(client, "constructor.name") && client._version)
-      rejcve["x_generator"] = {
-        engine: client.constructor.name + "/" + client._version,
-      };
+    rejcve["x_generator"] = { engine: "cveClient/" + _version };
     let cve = mr.cve_id;
     let ispublic = mr.state != "RESERVED";
     let rejected = true;
diff --git a/tests/api-client.test.js b/tests/api-client.test.js
index ebc2037..e06ce9e 100644
--- a/tests/api-client.test.js
+++ b/tests/api-client.test.js
@@ -75,9 +75,9 @@ describe("cveClient — CVE operations", () => {
     await client.publishcve("CVE-2024-1234", { description: "test" });
     expect(lastFetchUrl).toBe("https://api.example.com/cve/CVE-2024-1234/cna");
     expect(lastFetchOpts.method).toBe("POST");
-    expect(JSON.parse(lastFetchOpts.body)).toEqual({
-      cnaContainer: { description: "test" },
-    });
+    const body = JSON.parse(lastFetchOpts.body);
+    expect(body.cnaContainer.description).toBe("test");
+    expect(body.cnaContainer.x_generator.engine).toMatch(/^cveClient\//);
   });
 
   it("publishcve uses PUT for update", async () => {
@@ -122,6 +122,38 @@ describe("cveClient — CVE operations", () => {
   });
 });
 
+describe("cveClient — x_generator", () => {
+  let client;
+
+  beforeEach(() => {
+    client = new CveClient(
+      "test-org",
+      "test-user",
+      "key",
+      "https://api.example.com",
+    );
+  });
+
+  it("injects default x_generator with cveClientlib version when not set", async () => {
+    const cnajson = { descriptions: [{ lang: "en", value: "test" }] };
+    await client.publishcve("CVE-2024-1234", cnajson, true);
+    expect(cnajson["x_generator"]).toEqual({
+      engine: "cveClient/" + client._version,
+    });
+  });
+
+  it("preserves caller-provided x_generator (UI path)", async () => {
+    const cnajson = {
+      descriptions: [{ lang: "en", value: "test" }],
+      x_generator: { engine: "cveClient/1.0.25" },
+    };
+    await client.publishcve("CVE-2024-1234", cnajson, true);
+    expect(cnajson["x_generator"]).toEqual({
+      engine: "cveClient/1.0.25",
+    });
+  });
+});
+
 describe("cveClient — ADP operations", () => {
   let client;