diff --git a/packages/nodes-base/nodes/Telegram/TelegramTrigger.node.ts b/packages/nodes-base/nodes/Telegram/TelegramTrigger.node.ts index 861a57683..aec3dc4dc 100644 --- a/packages/nodes-base/nodes/Telegram/TelegramTrigger.node.ts +++ b/packages/nodes-base/nodes/Telegram/TelegramTrigger.node.ts @@ -1,3 +1,4 @@ +import crypto from 'crypto'; import type { IHookFunctions, IWebhookFunctions, @@ -233,7 +234,11 @@ export class TelegramTrigger implements INodeType { const nodeVersion = this.getNode().typeVersion; if (nodeVersion > 1) { const secret = getSecretToken.call(this); - if (secret !== headerData['x-telegram-bot-api-secret-token']) { + const secretBuffer = Buffer.from(secret); + const headerSecretBuffer = Buffer.from( + String(headerData['x-telegram-bot-api-secret-token'] ?? ''), + ); + if (!crypto.timingSafeEqual(secretBuffer, headerSecretBuffer)) { const res = this.getResponseObject(); res.status(403).json({ message: 'Provided secret is not valid' }); return {