---
id: CVE-2026-101050
title: >-
  Heym before 0.0.53 fails to verify the X-Telegram-Bot-Api-Secret-Token header
  on Telegram webhook endpoints when credential_id is absent or secret_token is
  empty
summary: >-
  Heym before 0.0.53 fails to verify the X-Telegram-Bot-Api-Secret-Token header
  on Telegram webhook endpoints when credential_id is absent or secret_token is
  empty. Remote unauthenticated attackers can post forged Telegram updates to
  trigg…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N'
cwe:
  - CWE-287
vendor: heymrun
product: heym
affected:
  - heym < 0.0.53
published: '2026-09-27'
updated: '2026-09-27'
sourceUpdated: '2026-09-27T17:16:56.100'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101050'
references:
  - url: >-
      https://github.com/heymrun/heym/commit/341d1012367cd74f85c617e1c98dd49e3fcb5e83
    label: disclosure@vulncheck.com
  - url: 'https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/heym-before-0.0.53-authentication-bypass-via-telegram-webhook
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-09-27T16:55:23.212Z'
---

## Overview

Heym before 0.0.53 fails to verify the X-Telegram-Bot-Api-Secret-Token header on Telegram webhook endpoints when credential_id is absent or secret_token is empty. Remote unauthenticated attackers can post forged Telegram updates to trigger workflows with the owner's configured credentials and execute actions on attacker-supplied input.

## Remediation

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