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CVE-2026-42572— Hatchet: Cross-tenant information disclosure in `listTasksByDAGIds`

Quick assessment

Affected
hatchet-dev hatchet
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

hatchet是Hatchet开源的一个后台任务与AI工作流编排引擎。 hatchet 0.83.39之前版本存在安全漏洞，该漏洞源于GET /api/v1/stable/dags/tasks端点缺少授权指令，导致跳过租户成员检查，可能导致认证到同一Hatchet实例上任何租户的用户使用另一个租户的UUID和属于该租户的DAG UUID查询端点，获取该DAG的任务元数据。

CVSS 5.3 · Medium EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 1

VendorProduct Version RangeStatus
hatchet-dev hatchet < 0.83.38 affected
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I. Basic Information for CVE-2026-42572

Vulnerability Information
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Vulnerability Title
Hatchet: Cross-tenant information disclosure in `listTasksByDAGIds`
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5
Vulnerability Title
hatchet 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
hatchet是Hatchet开源的一个后台任务与AI工作流编排引擎。 hatchet 0.83.39之前版本存在安全漏洞，该漏洞源于GET /api/v1/stable/dags/tasks端点缺少授权指令，导致跳过租户成员检查，可能导致认证到同一Hatchet实例上任何租户的用户使用另一个租户的UUID和属于该租户的DAG UUID查询端点，获取该DAG的任务元数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
hatchet-dev hatchet < 0.83.38 -

II. Public POCs for CVE-2026-42572

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III. Intelligence Information for CVE-2026-42572

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Vendor Advisories for CVE-2026-42572 (1)

IV. Related Vulnerabilities

Same weakness: CWE-639

V. Comments for CVE-2026-42572

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