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Hatchet DurableTask WorkerStatus gRPC resolves caller-supplied durable-task UUIDs via ListSatisfiedEntries with no tenant_id filter

Type: advisorySource: OSV2 source records

# Cross-tenant disclosure risk on `DurableTask` bidi RPC This is a low-severity, low-risk cross-tenant data exposure vuln caused by blindly accepting a durable task id, in addition to a list of node and branch ids that identify records in that task's event log, and returning them to the caller via the `handleWorkerStatus` polling path. # Impact This advisory requires an attacker to successfully guess a durable task's external uuid belonging to another tenant. External ids are generated uuid v4s (`uuid.New()` in Go), so exploitation requires prior knowledge of a target task UUID through an out-of-band channel. Thus, while the following environments are impacted, there is an extremely low probability it would be exploited. ### Who is impacted. Any Hatchet deployment that hosts more than one tenant on the same instance: * Hatchet Cloud (multi-tenant SaaS) * Self-hosted Hatchet with multiple internal teams / business units sharing one instance * Any deployment where a single tenant's API token can be obtained by an attacker Single-tenant self-hosted deployments are unaffected in practice (the "victim" and "attacker" tenants would be the same).

Announced Group revision 1
Original source ↗

GO-2026-6560

Revision 1

Hatchet DurableTask WorkerStatus gRPC resolves caller-supplied durable-task UUIDs via ListSatisfiedEntries with no tenant_id filter in github.com/hatchet-dev/hatchet

Hatchet DurableTask WorkerStatus gRPC resolves caller-supplied durable-task UUIDs via ListSatisfiedEntries with no tenant_id filter in github.com/hatchet-dev/hatchet

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:GO-2026-6560

github.com/hatchet-dev/hatchet

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
0.106.1

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.106.1"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/hatchet-dev/hatchet",
      "purl": "pkg:golang/github.com/hatchet-dev/hatchet",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://vuln.go.dev/ID/GO-2026-6560.json"
    },
    "ecosystem_specific": {}
  }
]
Related CVEs
CVE-2026-88978

Source reference: /aliases

Publisher severity

No explicit severity was provided.

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

Event
#63848 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

GHSA-992g-9cr3-vm5x

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:GHSA-992g-9cr3-vm5x

github.com/hatchet-dev/hatchet

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
0.106.1

Source reference: /affected/0/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "0.106.1"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/hatchet-dev/hatchet",
      "purl": "pkg:golang/github.com/hatchet-dev/hatchet",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-992g-9cr3-vm5x/GHSA-992g-9cr3-vm5x.json"
    }
  }
]
Related CVEs
CVE-2026-88978

Source reference: /aliases

Publisher severity

No explicit severity was provided.

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

Event
#63945 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement