Medium
Hatchet: Cross-tenant information disclosure in `listTasksByDAGIds`
Type: advisorySources: OSV
Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.83.39, a missing authorization directive on the GET /api/v1/stable/dags/tasks endpoint caused Hatchet's tenant-membership check to be skipped for this route. A user authenticated to any tenant on the same Hatchet instance could query the endpoint with another tenant's UUID and a DAG UUID belonging to that tenant, and receive task metadata for that DAG. This vulnerability is fixed in 0.83.39.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-42572
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 3 Nov 2026, 01:12 UTC · Revision 1
Source evidence
Hatchet: Cross-tenant information disclosure in `listTasksByDAGIds`
core-osv · Original sourcePublished 14 May 2026, 16:58 UTC
Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.83.39, a missing authorization directive on the GET /api/v1/stable/dags/tasks endpoint caused Hatchet's tenant-membership check to be skipped for this route. A user authenticated to any tenant on the same Hatchet instance could query the endpoint with another tenant's UUID and a DAG UUID belonging to that tenant, and receive task metadata for that DAG. This vulnerability is fixed in 0.83.39.
osv:CVE-2026-42572
Complete source record
{
"id": "701ab1b6aab6a854494658cf367b85e69c21baca19381b5f014665a46bffe274",
"url": "https://osv.dev/vulnerability/CVE-2026-42572",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Hatchet: Cross-tenant information disclosure in `listTasksByDAGIds`",
"summary": "Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.83.39, a missing authorization directive on the GET /api/v1/stable/dags/tasks endpoint caused Hatchet's tenant-membership check to be skipped for this route. A user authenticated to any tenant on the same Hatchet instance could query the endpoint with another tenant's UUID and a DAG UUID belonging to that tenant, and receive task metadata for that DAG. This vulnerability is fixed in 0.83.39.",
"evidence": "osv:CVE-2026-42572",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2026-42572",
"aliases": [
"CVE-2026-42572",
"GHSA-55gc-6fmc-fpx9",
"GO-2026-5134"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/hatchet-dev/hatchet",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "2c1e5e601ee5c9520d4096f397e23c4953c7a559"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "0.83.38"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"cpe": "cpe:2.3:a:hatchet:hatchet:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "0.83.39"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-42572.json"
}
}
],
"modified": "2026-10-28T02:30:24.855509566Z",
"provider": "osv",
"references": [
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42572.json",
"https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-55gc-6fmc-fpx9",
"https://nvd.nist.gov/vuln/detail/CVE-2026-42572"
],
"provider_metadata": {
"cwe_ids": [
"CWE-639",
"CWE-863"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42572.json"
}
},
"related_cves": [
{
"value": "CVE-2026-42572",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 491484,
"published_at": "2026-05-14T16:58:43.026+00:00"
}