CVE-2026-101049
Heym before 0.0.53 Slack Webhook Signature Verification Bypass
CVSS Score
6.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-287 |
| Vendor | heymrun |
| Product | heym |
| Published | Sep 27, 2026 |
| Last Updated | Sep 27, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:H/A:N Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
High
Availability
None
Affected Versions
heymrun / heym
0 < 0.0.53
References
Credits
okcomputerfan mbakgun