CVE-2026-101049

Published: Sep 27, 2026Modified: Sep 28, 2026Deferred

8.3

Vector

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: disclosure@vulncheck.com (Secondary)

Description

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.

Related CWEs

CWE-287

Improper Authentication

When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

References (4)

https://github.com/heymrun/heym/commit/341d1012367cd74f85c617e1c98dd49e3fcb5e83

Source: disclosure@vulncheck.com

https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h

Source: disclosure@vulncheck.com

https://www.vulncheck.com/advisories/heym-before-0.0.53-slack-webhook-signature-verification-bypass

Source: disclosure@vulncheck.com

https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0

Timeline

No history available yet.