CVE-2026-101049
Heym before 0.0.53 fails to verify Slack request signatures when trigger nodes lack credential IDs…
- Risk score
- 43/100
- CVSS
- 6.5 v3.1
- Exploit chance (30 days)
- 0.3%
- Published
- 27 Sep 2026
Open in the live forecast Today's forecast
What to know
- What it is
- 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.
- Affected
- See advisory
- Fix
- Upgrade the product to 0.0.53 or later.
- Exploitation
- No known exploitation
Why it is Yellow
- CVSS 6.5 medium
References
- 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
Original 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.
Last activity 27 Sep 2026. Patch Forecast updates every hour.