diff --git a/app/src/main/java/io/legado/app/help/JsExtensions.kt b/app/src/main/java/io/legado/app/help/JsExtensions.kt
index 61facbc12..00f662c67 100644
--- a/app/src/main/java/io/legado/app/help/JsExtensions.kt
+++ b/app/src/main/java/io/legado/app/help/JsExtensions.kt
@@ -988,6 +988,7 @@ interface JsExtensions : JsEncodeUtils {
 
     // 新增 mimeType 参数，默认为 null（保持兼容性）
     fun openUrl(url: String, mimeType: String? = null) {
+        require(url.length < 64 * 1024) { "openUrl parameter url too long" }
         rhinoContext.ensureActive()
         val source = getSource() ?: throw NoStackTraceException("openUrl source cannot be null")
         appCtx.startActivity<OpenUrlConfirmActivity> {
diff --git a/app/src/main/java/io/legado/app/help/source/SourceVerificationHelp.kt b/app/src/main/java/io/legado/app/help/source/SourceVerificationHelp.kt
index 1573b3e75..80b514365 100644
--- a/app/src/main/java/io/legado/app/help/source/SourceVerificationHelp.kt
+++ b/app/src/main/java/io/legado/app/help/source/SourceVerificationHelp.kt
@@ -39,9 +39,8 @@ object SourceVerificationHelp {
     ): String {
         source
             ?: throw NoStackTraceException("getVerificationResult parameter source cannot be null")
-        if (isMainThread) {
-            error("getVerificationResult must be called on a background thread")
-        }
+        require(url.length < 64 * 1024) { "getVerificationResult parameter url too long" }
+        check(!isMainThread) { "getVerificationResult must be called on a background thread" }
 
         clearResult(source.getKey())
 
@@ -85,6 +84,7 @@ object SourceVerificationHelp {
         refetchAfterSuccess: Boolean? = true
     ) {
         source ?: throw NoStackTraceException("startBrowser parameter source cannot be null")
+        require(url.length < 64 * 1024) { "startBrowser parameter url too long" }
         appCtx.startActivity<WebViewActivity> {
             putExtra("title", title)
             putExtra("url", url)