diff --git a/apps/desktop/src/components/connection/ConnectionDialog.vue b/apps/desktop/src/components/connection/ConnectionDialog.vue
index 9503899c2..669654248 100644
--- a/apps/desktop/src/components/connection/ConnectionDialog.vue
+++ b/apps/desktop/src/components/connection/ConnectionDialog.vue
@@ -31,6 +31,7 @@ import { firstZooKeeperEndpoint, normalizeZooKeeperConnectString } from "@/lib/z
 import { isLocalFileTypeDb } from "@/lib/connectionFile";
 import { MQ_PINNED_VERSION_OPTIONS, pinnedVersionToSelection, selectionToPinnedVersion } from "@/lib/mqPinnedVersionOptions";
 import { mongodbAuthFailureHint, mongoUrlParam, setMongoUrlParam } from "@/lib/mongoConnectionOptions";
+import { mysqlCleartextPasswordAuthEnabled, setMysqlCleartextPasswordAuthEnabled } from "@/lib/mysqlConnectionOptions";
 import { copyToClipboard } from "@/lib/clipboard";
 import { agentDriverInstallKey, appendAgentDriverUpdateHint, hasAgentDriverUpdate, showAgentDriverInstallHint, type AgentDriverInstallState } from "@/lib/agentDriverInstallHint";
 import { prestoSqlBuiltinDriverPaths } from "@/lib/prestoSqlBuiltinDriver";
@@ -1593,6 +1594,13 @@ const supportsCaCertificatePath = computed(() => form.value.db_type === "clickho
 const supportsGenericUrlParams = computed(() => form.value.db_type !== "manticoresearch");
 const bareMysqlProfiles = new Set(["doris", "selectdb", "oceanbase"]);
 const supportsMysqlTlsOptions = computed(() => form.value.db_type === "starrocks" || (form.value.db_type === "mysql" && !bareMysqlProfiles.has(selectedType.value)));
+const supportsMysqlCleartextPasswordAuth = computed(() => form.value.db_type === "mysql" && !bareMysqlProfiles.has(selectedType.value));
+const mysqlCleartextPasswordAuth = computed({
+  get: () => mysqlCleartextPasswordAuthEnabled(form.value.url_params),
+  set: (value: boolean) => {
+    form.value.url_params = setMysqlCleartextPasswordAuthEnabled(form.value.url_params, value);
+  },
+});
 const mysqlTlsMode = computed({
   get: () => mysqlTlsModeFromParams(form.value.url_params, form.value.ssl),
   set: (value: string) => {
@@ -4204,7 +4212,7 @@ function openExternalUrl(url: string) {
             </TabsContent>
 
             <TabsContent v-if="supportsTlsToggle" value="tls" class="m-0">
-              <div class="connection-form-body grid gap-4 py-4 pr-2 max-h-[65vh] overflow-y-auto">
+              <div class="connection-form-body grid gap-4 py-4 pr-2 max-h-[65vh] overflow-y-auto overflow-x-hidden">
                 <div v-if="!supportsPostgresTlsOptions && !supportsMysqlTlsOptions" class="grid grid-cols-4 items-center gap-4">
                   <Label :class="connectionLabelSmallClass">SSL/TLS</Label>
                   <label class="col-span-3 flex items-center gap-2 cursor-pointer">
@@ -4284,6 +4292,16 @@ function openExternalUrl(url: string) {
                 </template>
 
                 <template v-if="supportsMysqlTlsOptions">
+                  <div v-if="supportsMysqlCleartextPasswordAuth" class="grid grid-cols-4 items-start gap-4">
+                    <Label :class="[connectionLabelSmallPaddedClass, 'min-w-0 break-words']">{{ t("connection.mysqlCleartextPasswordAuth") }}</Label>
+                    <div class="col-span-3 flex min-w-0 items-start justify-between gap-4">
+                      <p class="min-w-0 text-[11px] leading-4 text-muted-foreground break-words">
+                        {{ t("connection.mysqlCleartextPasswordAuthHint") }}
+                      </p>
+                      <Switch v-model="mysqlCleartextPasswordAuth" class="mt-0.5 shrink-0" />
+                    </div>
+                  </div>
+
                   <div class="grid grid-cols-4 items-center gap-4">
                     <Label :class="connectionLabelSmallClass">{{ t("connection.mysqlTlsMode") }}</Label>
                     <Select v-model="mysqlTlsMode">
diff --git a/apps/desktop/src/i18n/locales/en.ts b/apps/desktop/src/i18n/locales/en.ts
index 9241541e4..ae3f276a3 100644
--- a/apps/desktop/src/i18n/locales/en.ts
+++ b/apps/desktop/src/i18n/locales/en.ts
@@ -203,6 +203,8 @@ export default {
     mysqlTlsModeRequired: "Required",
     mysqlTlsModeVerifyCa: "Verify CA",
     mysqlTlsModeVerifyIdentity: "Verify Identity",
+    mysqlCleartextPasswordAuth: "Cleartext Password Auth",
+    mysqlCleartextPasswordAuthHint: "Enable only when the MySQL server requires the cleartext password authentication plugin.",
     mysqlCaCertHint: "Required for Verify CA and Verify Identity when the server certificate uses a private CA.",
     mysqlClientCert: "Client Auth",
     mysqlClientCertPlaceholder: "/path/to/client.crt",
diff --git a/apps/desktop/src/i18n/locales/es.ts b/apps/desktop/src/i18n/locales/es.ts
index c4e3f8bdc..104822b8d 100644
--- a/apps/desktop/src/i18n/locales/es.ts
+++ b/apps/desktop/src/i18n/locales/es.ts
@@ -205,6 +205,8 @@ export default withEnglishFallback({
     mysqlTlsModeRequired: "Requerido",
     mysqlTlsModeVerifyCa: "Verificar CA",
     mysqlTlsModeVerifyIdentity: "Verificar identidad",
+    mysqlCleartextPasswordAuth: "Autenticación de contraseña en claro",
+    mysqlCleartextPasswordAuthHint: "Actívala solo cuando el servidor MySQL requiera el plugin de autenticación de contraseña en claro.",
     mysqlCaCertHint: "Requerido para Verificar CA e Identidad cuando el certificado usa una CA privada.",
     mysqlClientCert: "Autenticación cliente",
     mysqlClientCertPlaceholder: "/ruta/a/client.crt",
diff --git a/apps/desktop/src/i18n/locales/it.ts b/apps/desktop/src/i18n/locales/it.ts
index f7ac0e958..2a3cf7f1f 100644
--- a/apps/desktop/src/i18n/locales/it.ts
+++ b/apps/desktop/src/i18n/locales/it.ts
@@ -204,6 +204,8 @@ export default withEnglishFallback({
     mysqlTlsModeRequired: "Richiesta",
     mysqlTlsModeVerifyCa: "Verifica CA",
     mysqlTlsModeVerifyIdentity: "Verifica Identità",
+    mysqlCleartextPasswordAuth: "Autenticazione password in chiaro",
+    mysqlCleartextPasswordAuthHint: "Attiva solo quando il server MySQL richiede il plugin di autenticazione password in chiaro.",
     mysqlCaCertHint: "Richiesto per Verifica CA e Verifica Identità quando il certificato del server usa una CA privata.",
     mysqlClientCert: "Autenticazione Client",
     mysqlClientCertPlaceholder: "/percorso/per/client.crt",
diff --git a/apps/desktop/src/i18n/locales/ja.ts b/apps/desktop/src/i18n/locales/ja.ts
index 623227572..8ed26f488 100644
--- a/apps/desktop/src/i18n/locales/ja.ts
+++ b/apps/desktop/src/i18n/locales/ja.ts
@@ -204,6 +204,8 @@ export default withEnglishFallback({
     mysqlTlsModeRequired: "必須",
     mysqlTlsModeVerifyCa: "CA検証",
     mysqlTlsModeVerifyIdentity: "ID検証",
+    mysqlCleartextPasswordAuth: "平文パスワード認証",
+    mysqlCleartextPasswordAuthHint: "MySQLサーバーがcleartext password認証プラグインを要求する場合のみ有効にしてください。",
     mysqlCaCertHint: "サーバー証明書がプライベートCAで署名されている場合、CA検証とID検証に必要です。",
     mysqlClientCert: "クライアント認証",
     mysqlClientCertPlaceholder: "/path/to/client.crt",
diff --git a/apps/desktop/src/i18n/locales/pt-BR.ts b/apps/desktop/src/i18n/locales/pt-BR.ts
index 8f789a313..f4ae2137e 100644
--- a/apps/desktop/src/i18n/locales/pt-BR.ts
+++ b/apps/desktop/src/i18n/locales/pt-BR.ts
@@ -205,6 +205,8 @@ export default withEnglishFallback({
     mysqlTlsModeRequired: "Obrigatório",
     mysqlTlsModeVerifyCa: "Verificar CA",
     mysqlTlsModeVerifyIdentity: "Verificar Identidade",
+    mysqlCleartextPasswordAuth: "Autenticação de senha em texto claro",
+    mysqlCleartextPasswordAuthHint: "Ative somente quando o servidor MySQL exigir o plugin de autenticação de senha em texto claro.",
     mysqlCaCertHint: "Necessário para Verificar CA e Verificar Identidade quando o certificado do servidor usa uma CA privada.",
     mysqlClientCert: "Autenticação do Cliente",
     mysqlClientCertPlaceholder: "/caminho/para/client.crt",
diff --git a/apps/desktop/src/i18n/locales/zh-CN.ts b/apps/desktop/src/i18n/locales/zh-CN.ts
index b85d85561..ea6339c42 100644
--- a/apps/desktop/src/i18n/locales/zh-CN.ts
+++ b/apps/desktop/src/i18n/locales/zh-CN.ts
@@ -205,6 +205,8 @@ export default withEnglishFallback({
     mysqlTlsModeRequired: "必须使用",
     mysqlTlsModeVerifyCa: "验证 CA",
     mysqlTlsModeVerifyIdentity: "验证身份",
+    mysqlCleartextPasswordAuth: "明文密码认证",
+    mysqlCleartextPasswordAuthHint: "仅在 MySQL 服务端要求明文密码认证插件时开启。",
     mysqlCaCertHint: "服务端证书由私有 CA 签发时，Verify CA / Verify Identity 模式需要填写。",
     mysqlClientCert: "客户端认证",
     mysqlClientCertPlaceholder: "/path/to/client.crt",
diff --git a/apps/desktop/src/i18n/locales/zh-TW.ts b/apps/desktop/src/i18n/locales/zh-TW.ts
index 052d9b235..792a0b782 100644
--- a/apps/desktop/src/i18n/locales/zh-TW.ts
+++ b/apps/desktop/src/i18n/locales/zh-TW.ts
@@ -205,6 +205,8 @@ export default withEnglishFallback({
     mysqlTlsModeRequired: "必須使用",
     mysqlTlsModeVerifyCa: "驗證 CA",
     mysqlTlsModeVerifyIdentity: "驗證身份",
+    mysqlCleartextPasswordAuth: "明文密碼認證",
+    mysqlCleartextPasswordAuthHint: "僅在 MySQL 伺服器要求明文密碼認證外掛時啟用。",
     mysqlCaCertHint: "伺服器端憑證由私有 CA 簽發時，Verify CA / Verify Identity 模式需要填寫。",
     mysqlClientCert: "用戶端認證",
     mysqlClientCertPlaceholder: "/path/to/client.crt",
diff --git a/apps/desktop/src/lib/__tests__/mysqlConnectionOptions.spec.ts b/apps/desktop/src/lib/__tests__/mysqlConnectionOptions.spec.ts
new file mode 100644
index 000000000..c6117d464
--- /dev/null
+++ b/apps/desktop/src/lib/__tests__/mysqlConnectionOptions.spec.ts
@@ -0,0 +1,19 @@
+import { describe, expect, it } from "vitest";
+import { mysqlCleartextPasswordAuthEnabled, setMysqlCleartextPasswordAuthEnabled } from "../mysqlConnectionOptions";
+
+describe("mysqlConnectionOptions", () => {
+  it("detects cleartext password auth aliases", () => {
+    expect(mysqlCleartextPasswordAuthEnabled("allowCleartextPasswords=true")).toBe(true);
+    expect(mysqlCleartextPasswordAuthEnabled("enable_cleartext_plugin=true")).toBe(true);
+    expect(mysqlCleartextPasswordAuthEnabled("?AllowCleartextPasswords=TRUE")).toBe(true);
+    expect(mysqlCleartextPasswordAuthEnabled("allowCleartextPasswords=false")).toBe(false);
+  });
+
+  it("enables the canonical cleartext password auth param and removes aliases", () => {
+    expect(setMysqlCleartextPasswordAuthEnabled("allowCleartextPasswords=true&charset=utf8mb4", true)).toBe("charset=utf8mb4&enable_cleartext_plugin=true");
+  });
+
+  it("disables cleartext password auth params while preserving unrelated params", () => {
+    expect(setMysqlCleartextPasswordAuthEnabled("allowCleartextPasswords=true&enable_cleartext_plugin=true&charset=utf8mb4&connect_timeout=10", false)).toBe("charset=utf8mb4&connect_timeout=10");
+  });
+});
diff --git a/apps/desktop/src/lib/mysqlConnectionOptions.ts b/apps/desktop/src/lib/mysqlConnectionOptions.ts
new file mode 100644
index 000000000..e9fae9bb8
--- /dev/null
+++ b/apps/desktop/src/lib/mysqlConnectionOptions.ts
@@ -0,0 +1,31 @@
+const MYSQL_CLEAR_TEXT_PARAM_ALIASES = new Set(["allowcleartextpasswords", "enable_cleartext_plugin"]);
+const MYSQL_CLEAR_TEXT_PARAM = "enable_cleartext_plugin";
+
+function normalizeKey(key: string): string {
+  return key.trim().toLowerCase();
+}
+
+function isTruthyUrlParam(value: string): boolean {
+  return ["true", "1", "yes", "on"].includes(value.trim().toLowerCase());
+}
+
+function isMysqlCleartextPasswordParam(key: string): boolean {
+  return MYSQL_CLEAR_TEXT_PARAM_ALIASES.has(normalizeKey(key));
+}
+
+export function mysqlCleartextPasswordAuthEnabled(params: string | undefined): boolean {
+  const parsed = new URLSearchParams((params || "").trim().replace(/^\?/, ""));
+  for (const [key, value] of parsed.entries()) {
+    if (isMysqlCleartextPasswordParam(key) && isTruthyUrlParam(value)) return true;
+  }
+  return false;
+}
+
+export function setMysqlCleartextPasswordAuthEnabled(params: string | undefined, enabled: boolean): string {
+  const parsed = new URLSearchParams((params || "").trim().replace(/^\?/, ""));
+  for (const key of [...parsed.keys()]) {
+    if (isMysqlCleartextPasswordParam(key)) parsed.delete(key);
+  }
+  if (enabled) parsed.set(MYSQL_CLEAR_TEXT_PARAM, "true");
+  return parsed.toString();
+}
diff --git a/crates/dbx-core/src/db/mysql.rs b/crates/dbx-core/src/db/mysql.rs
index 2343ca949..07cb5531b 100644
--- a/crates/dbx-core/src/db/mysql.rs
+++ b/crates/dbx-core/src/db/mysql.rs
@@ -952,6 +952,14 @@ fn is_dbx_handled_mysql_url_param(key: &str) -> bool {
     )
 }
 
+fn is_mysql_cleartext_password_param(key: &str) -> bool {
+    matches!(key.to_ascii_lowercase().as_str(), "allowcleartextpasswords" | "enable_cleartext_plugin")
+}
+
+fn mysql_url_param_value_is_true(value: &str) -> bool {
+    matches!(value.trim().to_ascii_lowercase().as_str(), "true" | "1" | "yes" | "on")
+}
+
 /// Strips the database path from a `mysql://[user[:pass]@]host[:port][/path]`
 /// URL, returning only the scheme and authority. Used so mysql_async does not
 /// send the database as the schema during the MySQL handshake (StarRocks would
@@ -975,6 +983,7 @@ fn mysql_async_url(url: &str) -> Cow<'_, str> {
     let mut filtered: Vec<String> = Vec::new();
     let mut changed = false;
     let mut has_catalog = false;
+    let mut enable_cleartext_plugin = false;
     for segment in query.split('&') {
         let segment = segment.trim();
         if segment.is_empty() {
@@ -989,6 +998,11 @@ fn mysql_async_url(url: &str) -> Cow<'_, str> {
         if key.eq_ignore_ascii_case("catalog") {
             has_catalog = true;
         }
+        if is_mysql_cleartext_password_param(key) {
+            changed = true;
+            enable_cleartext_plugin |= mysql_url_param_value_is_true(value);
+            continue;
+        }
         if is_dbx_handled_mysql_url_param(key) {
             changed = true;
             continue;
@@ -1017,6 +1031,9 @@ fn mysql_async_url(url: &str) -> Cow<'_, str> {
         }
         filtered.push(segment.to_string());
     }
+    if enable_cleartext_plugin {
+        filtered.push("enable_cleartext_plugin=true".to_string());
+    }
 
     // When a catalog is configured, the database in the URL path must not be
     // sent as the schema during the MySQL handshake. Strip the path so mysql_async
@@ -3710,6 +3727,24 @@ UNIQUE KEY(`tenant_id`, `name``part`)
         assert_eq!(mysql_async_url(url).as_ref(), "mysql://host:3306/db?require_ssl=true");
     }
 
+    #[test]
+    fn mysql_async_url_normalizes_cleartext_password_auth_alias() {
+        let url = "mysql://host:3306/db?allowCleartextPasswords=true&charset=utf8mb4";
+        assert_eq!(mysql_async_url(url).as_ref(), "mysql://host:3306/db?enable_cleartext_plugin=true");
+    }
+
+    #[test]
+    fn mysql_async_url_deduplicates_cleartext_password_auth_params() {
+        let url = "mysql://host:3306/db?allowCleartextPasswords=true&enable_cleartext_plugin=true&require_ssl=true";
+        assert_eq!(mysql_async_url(url).as_ref(), "mysql://host:3306/db?require_ssl=true&enable_cleartext_plugin=true");
+    }
+
+    #[test]
+    fn mysql_async_url_omits_disabled_cleartext_password_auth_params() {
+        let url = "mysql://host:3306/db?allowCleartextPasswords=false&enable_cleartext_plugin=&require_ssl=true";
+        assert_eq!(mysql_async_url(url).as_ref(), "mysql://host:3306/db?require_ssl=true");
+    }
+
     #[test]
     fn mysql_async_url_strips_go_and_timezone_compat_params() {
         let url = "mysql://host:3306/db?charset=utf8mb4&parseTime=True&loc=Local&connectionTimeZone=Asia%2FShanghai&forceConnectionTimeZoneToSession=true&require_ssl=true";
diff --git a/crates/dbx-core/src/models/connection.rs b/crates/dbx-core/src/models/connection.rs
index 438752de2..a070099c4 100644
--- a/crates/dbx-core/src/models/connection.rs
+++ b/crates/dbx-core/src/models/connection.rs
@@ -1216,9 +1216,30 @@ fn normalize_bare_mysql_url_params(value: &str) -> String {
         .join("&")
 }
 
+fn is_mysql_cleartext_password_param(key: &str) -> bool {
+    matches!(key.to_ascii_lowercase().as_str(), "allowcleartextpasswords" | "enable_cleartext_plugin")
+}
+
+fn mysql_url_param_value_is_true(value: &str) -> bool {
+    matches!(value.trim().to_ascii_lowercase().as_str(), "true" | "1" | "yes" | "on")
+}
+
 fn normalize_mysql_url_params(value: &str, force_tls: bool, accept_invalid_certs: bool) -> String {
     let value = value.trim_start_matches('?');
     let mut parts: Vec<String> = value.split('&').filter(|part| !part.is_empty()).map(str::to_string).collect();
+    let enable_cleartext_plugin = parts.iter().any(|part| {
+        let Some((key, value)) = part.split_once('=') else {
+            return false;
+        };
+        is_mysql_cleartext_password_param(key.trim()) && mysql_url_param_value_is_true(value)
+    });
+
+    parts.retain(|part| {
+        let Some((key, _)) = part.split_once('=') else {
+            return true;
+        };
+        !is_mysql_cleartext_password_param(key.trim())
+    });
 
     if force_tls {
         parts.retain(|part| {
@@ -1242,6 +1263,9 @@ fn normalize_mysql_url_params(value: &str, force_tls: bool, accept_invalid_certs
     if !parts.iter().any(|part| url_param_key_is(part, "charset")) {
         parts.push("charset=utf8mb4".to_string());
     }
+    if enable_cleartext_plugin {
+        parts.push("enable_cleartext_plugin=true".to_string());
+    }
 
     parts.join("&")
 }
@@ -2086,6 +2110,51 @@ mod tests {
         );
     }
 
+    #[test]
+    fn mysql_cleartext_password_auth_alias_normalizes_to_driver_param() {
+        let mut config = mysql_config("root", "secret", Some("test"));
+        config.url_params = Some("allowCleartextPasswords=true".to_string());
+
+        assert_eq!(
+            config.connection_url(),
+            "mysql://root:secret@10.1.2.3:2883/test?ssl-mode=preferred&charset=utf8mb4&enable_cleartext_plugin=true"
+        );
+    }
+
+    #[test]
+    fn mysql_cleartext_password_auth_keeps_canonical_driver_param() {
+        let mut config = mysql_config("root", "secret", Some("test"));
+        config.url_params = Some("enable_cleartext_plugin=true".to_string());
+
+        assert_eq!(
+            config.connection_url(),
+            "mysql://root:secret@10.1.2.3:2883/test?ssl-mode=preferred&charset=utf8mb4&enable_cleartext_plugin=true"
+        );
+    }
+
+    #[test]
+    fn mysql_cleartext_password_auth_deduplicates_aliases() {
+        let mut config = mysql_config("root", "secret", Some("test"));
+        config.url_params =
+            Some("allowCleartextPasswords=true&enable_cleartext_plugin=true&charset=utf8mb4".to_string());
+
+        assert_eq!(
+            config.connection_url(),
+            "mysql://root:secret@10.1.2.3:2883/test?ssl-mode=preferred&charset=utf8mb4&enable_cleartext_plugin=true"
+        );
+    }
+
+    #[test]
+    fn mysql_cleartext_password_auth_omits_disabled_values() {
+        let mut config = mysql_config("root", "secret", Some("test"));
+        config.url_params = Some("allowCleartextPasswords=false&enable_cleartext_plugin=&charset=utf8mb4".to_string());
+
+        assert_eq!(
+            config.connection_url(),
+            "mysql://root:secret@10.1.2.3:2883/test?ssl-mode=preferred&charset=utf8mb4"
+        );
+    }
+
     #[test]
     fn mysql_tls_switch_requires_ssl_without_strict_certificate_checks_by_default() {
         let mut config = mysql_config("root", "secret", Some("test"));