---
id: CVE-2026-84298
title: >-
  Hatchet is a platform for orchestrating background tasks, AI agents, and
  durable workflows at scale
summary: >-
  Hatchet is a platform for orchestrating background tasks, AI agents, and
  durable workflows at scale. Prior to 0.95.3, the V1 DurableTask stream handler
  stores worker-supplied task_external_id values in the durableInvocations
  routing map …
severity: low
cvss: 3.1
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N'
cwe:
  - CWE-639
  - CWE-862
vendor: hatchet-dev
product: hatchet
affected:
  - hatchet < 0.95.3
patched:
  - github.com/hatchet-dev/hatchet 0.95.3
published: '2026-09-21'
updated: '2026-09-23'
sourceUpdated: '2026-09-23T18:26:49.087'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84298'
references:
  - url: >-
      https://github.com/hatchet-dev/hatchet/commit/9555bfdd1e97f61d25e614ccaa107c5fb7dc4976
    label: security-advisories@github.com
  - url: >-
      https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-9q4h-f4x5-ffq8
    label: security-advisories@github.com
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-84298'
  - url: 'https://github.com/advisories/GHSA-9q4h-f4x5-ffq8'
  - url: 'https://github.com/hatchet-dev/hatchet'
tags:
  - nvd
  - cve.org
  - ghsa
  - go
  - osv
epss: 0.00243
epssPercentile: 0.13834
aliases:
  - GHSA-9q4h-f4x5-ffq8
ecosystem: go
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-21T18:48:47.030536Z'
ingestedAt: '2026-09-21T16:11:47.444Z'
---

## Overview

Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.95.3, the V1 DurableTask stream handler stores worker-supplied task_external_id values in the durableInvocations routing map before tenant ownership is verified, and callback delivery resolves that map by task UUID without tenant identity. An authenticated tenant worker that knows another tenant's durable task UUID and keeps a stream open on the same dispatcher process can receive that task's durable callback result payload. UUIDv4 values are not enumerable, and single-tenant deployments are unaffected in practice. This issue is fixed in version 0.95.3.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Package advisory (CVE-2026-84298)

Affected packages:

- `github.com/hatchet-dev/hatchet < 0.95.3`

Patched in:

- `github.com/hatchet-dev/hatchet 0.95.3`

Source: https://github.com/advisories/GHSA-9q4h-f4x5-ffq8