GHSA-992g-9cr3-vm5x

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Source
https://github.com/advisories/GHSA-992g-9cr3-vm5x
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/09/GHSA-992g-9cr3-vm5x/GHSA-992g-9cr3-vm5x.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-992g-9cr3-vm5x
Aliases
Published
2026-09-22T20:40:46Z
Modified
2026-09-22T21:00:04Z
Severity
  • 4.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N CVSS Calculator
Summary
Hatchet DurableTask WorkerStatus gRPC resolves caller-supplied durable-task UUIDs via ListSatisfiedEntries with no tenant_id filter
Details

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).

Database specific
{
    "cwe_ids":  [
        "CWE-639",
        "CWE-863"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-09-22T20:40:46Z",
    "nvd_published_at":  "2026-09-21T16:17:26Z",
    "severity":  "MODERATE"
}
References

Affected packages

Go / github.com/hatchet-dev/hatchet

Package

Name
github.com/hatchet-dev/hatchet
View open source insights on deps.dev
Purl
pkg:golang/github.com/hatchet-dev/hatchet

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
0.106.1

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"