CVE-2026-101050: Heymrun Heym

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

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.

Affected products

• Heymrun Heym: before 0.0.53 (fixed in 0.0.53)

Published 2026-09-27. Last modified 2026-09-28.