GitHub Advisoryadvisory · Go

GHSA-g26x-m427-f48f Hatchet: Cross-Tenant Durable Task Event Log Disclosure via Missing Authorization Check

MEDIUM Published 2026-09-22 Modified 2026-09-22 Official page ↗
Aliases
CVE-2026-63342
Ecosystem
Go
Packages
github.com/hatchet-dev/hatchet
Severity
Moderate
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N
Weaknesses
CWE-863
Reviewed
2026-09-22

Affected packages

• Go github.com/hatchet-dev/hatchet: < 0.91.1 → fixed in 0.91.1

Description

Summary The `GET /api/v1/stable/durable-tasks/{durable-task}` endpoint (`listDurableEventLog`) is missing tenant authorization validation, allowing any authenticated user to read durable task event logs from any tenant. Impact This CVE requires the attacker to successfully guess the target UUID. Any authenticated Hatchet user can read durable task event logs from any other tenant, exposing: • Task display names and workflow identifiers • User messages (may contain sensitive business data) • Wait conditions and branching logic • Timing information

Related

Alias · CVE (1)

  • CVE-2026-63342 Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. vulnerability

Weakness · CWE (1)

  • CWE-863 Incorrect Authorization weakness

References