CVE-2026-101050

Heym before 0.0.53 Authentication Bypass via Telegram Webhook

MEDIUM
6.5
CVSS Score
Published: September 27, 2026 at 04:28 PM UTC
Updated: September 28, 2026 at 08:57 PM UTC
1 product affected across 1 vendorHeym

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.4%
SSVC
PoC

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.0.53
Vendor states this is fixed in 0.0.53 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
HIGH
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-287

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