GHSA-992G-9CR3-VM5X

Vulnerability from github – Published: 2026-09-22 20:40 – Updated: 2026-09-22 20:40

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).

Severity

4.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

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JSON

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Go",
        "name": "github.com/hatchet-dev/hatchet"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.106.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-88978"
  ],
  "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"
  },
  "details": "# Cross-tenant disclosure risk on `DurableTask` bidi RPC\n\nThis 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\u0027s event log, and returning them to the caller via the `handleWorkerStatus` polling path.\n\n# Impact\n\nThis advisory requires an attacker to successfully guess a durable task\u0027s 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.\n\n### Who is impacted. Any Hatchet deployment that hosts more than one tenant on the same instance:\n\n* Hatchet Cloud (multi-tenant SaaS)\n* Self-hosted Hatchet with multiple internal teams / business units sharing one instance\n* Any deployment where a single tenant\u0027s API token can be obtained by an attacker\n\nSingle-tenant self-hosted deployments are unaffected in practice (the \"victim\" and \"attacker\" tenants would be the same).",
  "id": "GHSA-992g-9cr3-vm5x",
  "modified": "2026-09-22T20:40:46Z",
  "published": "2026-09-22T20:40:46Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-992g-9cr3-vm5x"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-88978"
    },
    {
      "type": "WEB",
      "url": "https://github.com/hatchet-dev/hatchet/commit/15bc7923d3a8ebfeb0d88c19160dd24828921e85"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/hatchet-dev/hatchet"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Hatchet DurableTask WorkerStatus gRPC resolves caller-supplied durable-task UUIDs via ListSatisfiedEntries with no tenant_id filter"
}

CVE-2026-88978 (GCVE-0-2026-88978)

Vulnerability from cvelistv5 – Published: 2026-09-21 15:49 – Updated: 2026-09-21 15:49

Title

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

Summary

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.

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CWE

CWE-639 - Authorization Bypass Through User-Controlled Key
CWE-863 - Incorrect Authorization

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/hatchet-dev/hatchet/security/a…	x_refsource_CONFIRM
https://github.com/hatchet-dev/hatchet/commit/15b…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
hatchet-dev	hatchet	Affected: < 0.106.1

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "hatchet",
          "vendor": "hatchet-dev",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 0.106.1"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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\u0027s 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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "NONE",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639: Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-863",
              "description": "CWE-863: Incorrect Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-21T15:49:12.735Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-992g-9cr3-vm5x",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-992g-9cr3-vm5x"
        },
        {
          "name": "https://github.com/hatchet-dev/hatchet/commit/15bc7923d3a8ebfeb0d88c19160dd24828921e85",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/hatchet-dev/hatchet/commit/15bc7923d3a8ebfeb0d88c19160dd24828921e85"
        }
      ],
      "source": {
        "advisory": "GHSA-992g-9cr3-vm5x",
        "discovery": "UNKNOWN"
      },
      "title": "Hatchet DurableTask WorkerStatus gRPC resolves caller-supplied durable-task UUIDs via ListSatisfiedEntries with no tenant_id filter"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-88978",
    "datePublished": "2026-09-21T15:49:12.735Z",
    "dateReserved": "2026-09-10T16:02:31.342Z",
    "dateUpdated": "2026-09-21T15:49:12.735Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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