CVE-2026-101049

Heym before 0.0.53 fails to verify Slack request signatures when trigger nodes lack credential IDs or have empty signing secrets. Remote unauthenticated attackers can send forged Slack events to known webhook URLs to trigger workflows with the owner's credentials.

CVSS v3 6.5 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.2 / Impact : 4.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
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-slack-webhook-signature-verification-bypass
https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h

Configurations

No configuration.

History

28 Sep 2026, 15:17

Type	Values Removed	Values Added
References	~~() https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h -~~	() https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h -

27 Sep 2026, 17:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-09-27 17:16

Updated : 2026-09-28 21:02

NVD link : CVE-2026-101049

Mitre link : CVE-2026-101049

CVE.ORG link : CVE-2026-101049

JSON object : View

Products Affected

No product.

CWE

CWE-287

Improper Authentication

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