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TI-2026-30852 Aliases CVE-2026-42572GHSA-55gc-6fmc-fpx9

Hatchet: Cross-tenant information disclosure in `listTasksByDAGIds`

Priority LOW 28CWE-639Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-639.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00181 7th percentileScored 2026-11-07
Fix Fixed hatchet (hatchet-dev): 0.83.38github.com/hatchet-dev/hatchet (Go): 0.83.39

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
hatchet-devhatchetbefore 0.83.380.83.38Patch availableCNA
—github.com/hatchet-dev/hatchet (Go)before 0.83.390.83.39Patch availableGHSA-55gc-6fmc-fpx9
  • hatchet Vendorhatchet-dev Affected before 0.83.38 Fixed in 0.83.38 Patch available CNA
  • github.com/hatchet-dev/hatchet (Go) Vendor— Affected before 0.83.39 Fixed in 0.83.39 Patch available GHSA-55gc-6fmc-fpx9

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:hatchet:hatchet:*:*:*:*:*:*:*:*before 0.83.39VulnerableHatchet
  • cpe:2.3:a:hatchet:hatchet:*:*:*:*:*:*:*:* Versions before 0.83.39 Vulnerable ·Hatchet

Remediation

  • Fix · CNA hatchet (hatchet-dev) Fixed in 0.83.38
  • Fix · GHSA-55gc-6fmc-fpx9 github.com/hatchet-dev/hatchet (Go) Fixed in 0.83.39 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-42572
  2. 2026-10-03 Alias added: GHSA-55gc-6fmc-fpx9

References

Advisory 2

Other 1

  • TI-2026-70733 Unauthenticated memory exhaustion in Hatchet via SNS ingestion endpoint CVSS 4.0MEDIUM 6.9
  • TI-2026-44164 hatchet - Unauthenticated OAuth state CSRF / login-CSRF via empty-state collision in ValidateOAuthState CVSS 3.1HIGH 7.1
  • TI-2026-39557 Hatchet: Cross-tenant write/DoS to other tenants' workers via Dispatcher gRPC UpsertWorkerLabels and Unsubscribe CVSS 3.1MEDIUM 6.4
  • TI-2026-45168 Hatchet: Cross-Tenant Durable Task Event Log Disclosure via Missing Authorization Check CVSS 3.1MEDIUM 6.3
  • TI-2026-60309 Authorization bypass in hatchet-dev hatchet CVSS 3.1MEDIUM 4.3
  • TI-2026-44159 Hatchet: SSRF via Unsigned UnsubscribeURL in SNS UnsubscribeConfirmation Handler CVSS 3.1MEDIUM 4.1

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences