CVEvulnerability
CVE-2026-101049
8.3 HIGH
Official page ↗
- Status
- Deferred
- Published
- 2026-09-27
- Last modified
- 2026-09-28
- Assigner
- [email protected]
- CVSS 4.0 ([email protected])
- 8.3 HIGH — 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 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N
- Weaknesses
- CWE-287
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
Weakness · CWE (1)
- CWE-287 Improper Authentication weakness
References
- https://github.com/heymrun/heym/commit/341d1012367cd74f85c617e1c98dd49e3fcb5e83 github.com
- https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h github.com
- https://www.vulncheck.com/advisories/heym-before-0.0.53-slack-webhook-signature-verification-bypass www.vulncheck.com
- https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h github.com