CVE-2026-88978: Hatchet-Dev Hatchet

Medium severity, CVSS 4.3. EPSS: 0.3% chance of exploitation in the next 30 days.

Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.106.1, the WorkerStatus gRPC polling path in pkg/repository/durable_events.go passes caller-supplied durable task, node, and branch identifiers to ListSatisfiedEntries without a tenant filter, allowing an authenticated tenant worker that knows another tenant's durable-task UUID to retrieve matching durable event-log records. The UUIDv4 requirement makes exploitation unlikely, and single-tenant deployments are unaffected in practice. This issue is fixed in version 0.106.1.

Affected products

• Hatchet-Dev Hatchet: before 0.106.1 (fixed in 0.106.1)

Published 2026-09-21. Last modified 2026-09-24.