CVE-2026-42572

Hatchet: Cross-tenant information disclosure in `listTasksByDAGIds`

State: Published
Severity: 5.3 Medium
Published: May 14, 2026
Updated: May 15, 2026
Reserved: Apr 28, 2026

Description

Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.83.39, a missing authorization directive on the GET /api/v1/stable/dags/tasks endpoint caused Hatchet's tenant-membership check to be skipped for this route. A user authenticated to any tenant on the same Hatchet instance could query the endpoint with another tenant's UUID and a DAG UUID belonging to that tenant, and receive task metadata for that DAG. This vulnerability is fixed in 0.83.39.

Scores

CVSS	Score	Vector	Source
3.1	5.3 Medium	CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N	GitHub_M

Weaknesses

CWE-639 Authorization Bypass Through User-Controlled Key
CWE-863 Incorrect Authorization

Affected Products

Product	Versions
hatchethatchet-dev	< 0.83.38Affected

References

https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-55gc-6fmc-fpx9

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