Medium severity · published Sep 27, 2026
CVE-2026-101050
Heym before 0.0.53 Authentication Bypass via Telegram Webhook
6.5
CVSS
0.4%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HE
heym · heymrun
before 0.0.53 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-101050
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-101050
vendor-advisory
https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h
patch
https://github.com/heymrun/heym/commit/341d1012367cd74f85c617e1c98dd49e3fcb5e83
third-party-advisory
https://www.vulncheck.com/advisories/heym-before-0.0.53-authentication-bypass-via-telegram-webhook
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