CVE-2026-42572: CWE-639: Authorization Bypass Through User-Controlled Key in hatchet-dev hatchet
A vulnerability in Hatchet versions prior to 0.83.39 allows an authenticated user from one tenant to bypass authorization checks and access task metadata belonging to another tenant by querying the GET /api/v1/stable/dags/tasks endpoint with that tenant's UUID and DAG UUID. This is due to a missing authorization directive causing the tenant-membership check to be skipped. The issue is fixed in version 0.83.39.
AI Analysis
Technical Summary
Hatchet, a platform for orchestrating background tasks and workflows, had an authorization bypass vulnerability (CVE-2026-42572) in versions before 0.83.39. The GET /api/v1/stable/dags/tasks endpoint lacked proper authorization directives, allowing users authenticated to any tenant on the same instance to query task metadata for other tenants by supplying their UUIDs. This vulnerability is classified under CWE-639 (Authorization Bypass Through User-Controlled Key) and CWE-863 (Incorrect Authorization). The vulnerability has a CVSS 3.1 score of 5.3 (medium severity) and was fixed in version 0.83.39.
Potential Impact
An attacker authenticated to any tenant on the same Hatchet instance could access sensitive task metadata belonging to other tenants without proper authorization. This exposure affects confidentiality but does not impact integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Hatchet to version 0.83.39 or later, where the missing authorization directive on the affected endpoint has been added to enforce tenant-membership checks. Since the patch is included in this version, applying this official fix fully mitigates the vulnerability.
CVE-2026-42572: CWE-639: Authorization Bypass Through User-Controlled Key in hatchet-dev hatchet
Description
A vulnerability in Hatchet versions prior to 0.83.39 allows an authenticated user from one tenant to bypass authorization checks and access task metadata belonging to another tenant by querying the GET /api/v1/stable/dags/tasks endpoint with that tenant's UUID and DAG UUID. This is due to a missing authorization directive causing the tenant-membership check to be skipped. The issue is fixed in version 0.83.39.
CVSS v3.1
Score 5.3medium
Affected software
pkg:github/hatchet-dev/hatchetRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
Hatchet, a platform for orchestrating background tasks and workflows, had an authorization bypass vulnerability (CVE-2026-42572) in versions before 0.83.39. The GET /api/v1/stable/dags/tasks endpoint lacked proper authorization directives, allowing users authenticated to any tenant on the same instance to query task metadata for other tenants by supplying their UUIDs. This vulnerability is classified under CWE-639 (Authorization Bypass Through User-Controlled Key) and CWE-863 (Incorrect Authorization). The vulnerability has a CVSS 3.1 score of 5.3 (medium severity) and was fixed in version 0.83.39.
Potential Impact
An attacker authenticated to any tenant on the same Hatchet instance could access sensitive task metadata belonging to other tenants without proper authorization. This exposure affects confidentiality but does not impact integrity or availability. There are no known exploits in the wild at this time.
Mitigation Recommendations
Upgrade Hatchet to version 0.83.39 or later, where the missing authorization directive on the affected endpoint has been added to enforce tenant-membership checks. Since the patch is included in this version, applying this official fix fully mitigates the vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-28T17:26:12.084Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a06082eec166c07b0fd3b57
Added to database: 05/14/2026, 17:36:46 UTC
Last enriched: 05/22/2026, 15:34:38 UTC
Last updated: 07/31/2026, 19:22:58 UTC
Views: 89
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