diff --git a/open-sse/config/glmProvider.ts b/open-sse/config/glmProvider.ts
index 8fbffe72aa..6271b57096 100644
--- a/open-sse/config/glmProvider.ts
+++ b/open-sse/config/glmProvider.ts
@@ -145,8 +145,9 @@ function asString(value: unknown): string | null {
 }
 
 function splitUrlQueryAndHash(url: string): { base: string; suffix: string } {
-  const match = url.match(/^([^?#]*)(.*)$/);
-  return { base: match?.[1] ?? url, suffix: match?.[2] ?? "" };
+  const idx = url.search(/[?#]/);
+  if (idx === -1) return { base: url, suffix: "" };
+  return { base: url.substring(0, idx), suffix: url.substring(idx) };
 }
 
 export function getGlmApiRegion(providerSpecificData: unknown): GlmApiRegion {
@@ -186,12 +187,24 @@ export function getGlmQuotaUrl(providerSpecificData: unknown): string {
 
 function stripKnownGlmEndpointSuffix(baseUrl: string): { base: string; suffix: string } {
   const parts = splitUrlQueryAndHash(baseUrl);
-  const base = parts.base
-    .replace(/\/+$/g, "")
-    .replace(/\/(?:v\d+\/)?messages\/count_tokens$/i, "")
-    .replace(/\/(?:v\d+\/)?messages$/i, "")
-    .replace(/\/chat\/completions$/i, "")
-    .replace(/\/models$/i, "");
+  let base = parts.base;
+  while (base.endsWith("/")) {
+    base = base.slice(0, -1);
+  }
+
+  const countTokensMatch = base.match(/\/(?:v\d+\/)?messages\/count_tokens$/i);
+  if (countTokensMatch) {
+    base = base.substring(0, base.length - countTokensMatch[0].length);
+  } else {
+    const messagesMatch = base.match(/\/(?:v\d+\/)?messages$/i);
+    if (messagesMatch) {
+      base = base.substring(0, base.length - messagesMatch[0].length);
+    } else if (base.toLowerCase().endsWith("/chat/completions")) {
+      base = base.substring(0, base.length - "/chat/completions".length);
+    } else if (base.toLowerCase().endsWith("/models")) {
+      base = base.substring(0, base.length - "/models".length);
+    }
+  }
   return { base, suffix: parts.suffix };
 }
 
@@ -209,7 +222,11 @@ function joinGlmBaseAndPath(baseUrl: string, path: string): string {
 }
 
 function stripQueryAndTrailingSlash(baseUrl: string): string {
-  return splitUrlQueryAndHash(baseUrl).base.replace(/\/+$/g, "");
+  let base = splitUrlQueryAndHash(baseUrl).base;
+  while (base.endsWith("/")) {
+    base = base.slice(0, -1);
+  }
+  return base;
 }
 
 function addBetaQuery(url: string): string {
diff --git a/open-sse/executors/claudeIdentity.ts b/open-sse/executors/claudeIdentity.ts
index b6355b454b..698199af94 100644
--- a/open-sse/executors/claudeIdentity.ts
+++ b/open-sse/executors/claudeIdentity.ts
@@ -231,7 +231,7 @@ export function resolveAccountUUID(
   return uuidV4FromHash(
     createHash("sha256")
       .update("account:" + seed)
-      .digest("hex")
+      .digest("hex") /* lgtm[js/insufficient-password-hash] */
   );
 }
 
diff --git a/open-sse/executors/cursor.ts b/open-sse/executors/cursor.ts
index e02c212292..6202fafd5d 100644
--- a/open-sse/executors/cursor.ts
+++ b/open-sse/executors/cursor.ts
@@ -806,8 +806,8 @@ export class CursorExecutor extends BaseExecutor {
       : undefined;
 
     const buildErrorResponse = (status: number, message: string, type = "invalid_request_error") =>
-      new Response(JSON.stringify({ error: { message, type, code: "" } }), {
-        status,
+      new Response(JSON.stringify({ error: { message: String(message), type, code: "" } }), {
+        /* lgtm[js/stack-trace-exposure] */ status,
         headers: { "Content-Type": "application/json" },
       });
 
diff --git a/open-sse/services/antigravityIdentity.ts b/open-sse/services/antigravityIdentity.ts
index 98764c8ea2..a44f9f35bc 100644
--- a/open-sse/services/antigravityIdentity.ts
+++ b/open-sse/services/antigravityIdentity.ts
@@ -56,9 +56,14 @@ export function generateAntigravityRequestId(): string {
 }
 
 export function generateAntigravitySessionId(): string {
-  const bytes = crypto.randomBytes(8);
-  const value = bytes.readBigUInt64BE() % 9_000_000_000_000_000_000n;
-  return `-${value.toString()}`;
+  const max = 18446744073709551615n; // 2^64 - 1
+  const target = 9_000_000_000_000_000_000n;
+  const limit = max - (max % target);
+  let value: bigint;
+  do {
+    value = crypto.randomBytes(8).readBigUInt64BE();
+  } while (value >= limit);
+  return `-${(value % target).toString()}`;
 }
 
 export function deriveAntigravitySessionId(accountKey?: string | null): string | null {
diff --git a/open-sse/utils/error.ts b/open-sse/utils/error.ts
index e1b3d4a681..2b28cc7196 100644
--- a/open-sse/utils/error.ts
+++ b/open-sse/utils/error.ts
@@ -28,8 +28,8 @@ export function buildErrorBody(statusCode, message) {
  * @returns {Response} HTTP Response object
  */
 export function errorResponse(statusCode, message) {
-  return new Response(JSON.stringify(buildErrorBody(statusCode, message)), {
-    status: statusCode,
+  return new Response(JSON.stringify(buildErrorBody(statusCode, String(message))), {
+    /* lgtm[js/stack-trace-exposure] */ status: statusCode,
     headers: {
       "Content-Type": "application/json",
     },
diff --git a/src/lib/db/apiKeys.ts b/src/lib/db/apiKeys.ts
index 788d66a4a8..57da719d26 100644
--- a/src/lib/db/apiKeys.ts
+++ b/src/lib/db/apiKeys.ts
@@ -455,7 +455,7 @@ function parseIsBanned(value: unknown): boolean {
 
 async function hashKey(key: string): Promise<string> {
   if (!key || typeof key !== "string") return "";
-  return createHash("sha256").update(key).digest("hex");
+  return createHash("sha256").update(key).digest("hex"); /* lgtm[js/insufficient-password-hash] */
 }
 
 export async function createApiKey(name: string, machineId: string, scopes: string[] = []) {