---
id: CVE-2026-62865
title: Typebot is an open-source chatbot builder
summary: >-
  Typebot is an open-source chatbot builder. In self-hosted versions prior to
  3.18.0, the server-side Send Email integration block allows arbitrary reading
  of local files on the server. The block builds Nodemailer attachments from a
  typebo…
severity: none
cwe:
  - CWE-73
  - CWE-200
published: '2026-08-25'
updated: '2026-09-09'
sourceUpdated: '2026-09-09T21:09:13.080'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-62865'
references:
  - url: >-
      https://github.com/baptisteArno/typebot.io/commit/9c81300e5abb28a68a5af2920b92043e3512899d
    label: security-advisories@github.com
  - url: 'https://github.com/baptisteArno/typebot.io/releases/tag/v3.18.0'
    label: security-advisories@github.com
  - url: >-
      https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-j32h-2r6x-wmf3
    label: security-advisories@github.com
  - url: >-
      https://github.com/baptisteArno/typebot.io/security/advisories/GHSA-j32h-2r6x-wmf3
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
epss: 0.00307
epssPercentile: 0.23724
ingestedAt: '2026-09-09T21:22:45.554Z'
---

## Overview

Typebot is an open-source chatbot builder. In self-hosted versions prior to 3.18.0, the server-side Send Email integration block allows arbitrary reading of local files on the server. The block builds Nodemailer attachments from a typebot variable, and its parseAttachments helper returns the supplied value as a filesystem path whenever it does not start with the application's own base URL, instead of requiring an http or https URL. The Nodemailer transport is created without disableFileAccess or disableUrlAccess, both of which default to false, so an attachment specified as an absolute server path is read from the local filesystem and delivered. Because both the attachment value and the recipient list are attacker-controllable typebot variables, any registered user can publish a bot whose Send Email block attaches an absolute path such as /etc/passwd or /proc/self/environ and mails it to an address they control. This enables reading any file the server process can access, including process environment secrets such as the credential encryption key and database connection string, without administrative privileges or victim interaction. Open signup is enabled by default and the system SMTP credential is already configured, so no non-default configuration is required. This issue is fixed in version 3.18.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.