CVE-2026-101049
mediumHeym before 0.0.53 fails to verify Slack request signatures when trigger nodes lack credential IDs or have empty signing secrets.
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
6.5
6.5 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-09-27 17:16
Modified: 2026-09-28 21:02
NVD status: Deferred
Last synced 2 days ago
Verified against the source API 2026-10-27 06:56 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/heymrun/heym/commit/341d1012367cd74f85c617e1c98dd49e3fcb5e83 disclosure@vulncheck.com
- https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/heym-before-0.0.53-slack-webhook-signature-verificati... disclosure@vulncheck.com
- https://github.com/heymrun/heym/security/advisories/GHSA-pm6h-x3h5-j38h 134c704f-9b21-4f2e-91b3-4a467353bcc0
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:56 UTC · record ↗