CVE-2026-101050 Heym before 0.0.53 Authentication Bypass via Telegram Webhook
Remote attackers can bypass authentication on Telegram webhooks to execute workflows using owner credentials due to missing token verification.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-101050?
CVE-2026-101050 is a high-severity authentication bypass vulnerability in heymrun heym, published on 27 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-287
Which versions are affected by CVE-2026-101050?
How do I fix CVE-2026-101050?
No fix has been published for CVE-2026-101050 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-101050 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-101050 exists.
Sources
Also known as GHSA-2x2v-2gpw-j9ff.