Description
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.
Metrics
CVSS 3.1 6.5/10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:NWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| heymrun | heym | < 0.0.53 |
References
- https://github.com/heymrun/heym/commit/341d1012367cd74f85c617e1c98dd49e3fcb5e83
- https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h
- https://www.vulncheck.com/advisories/heym-before-0.0.53-authentication-bypass-via-telegram-webhook
- https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h
Timeline
- Published
- Sep 27, 2026
- Last modified
- Sep 28, 2026
- NVD status
- Deferred