{"id":"CVE-2026-42572","aliases":["GHSA-55gc-6fmc-fpx9","GO-2026-5134"],"url":"https://o3.security/vulnerability/CVE-2026-42572","summary":"Hatchet: Cross-tenant information disclosure in `listTasksByDAGIds`","details":"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.","published":"2026-05-14T16:58:43.026Z","modified":"2026-08-12T03:51:18.012120230Z","cvss":{"score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N"},"epss":{"score":0.00181,"percentile":0.07683,"asOf":"2026-08-24"},"cisaKev":null,"exploitsKnown":0,"affectedPackages":[{"ecosystem":"Go","name":"github.com/hatchet-dev/hatchet","fixedVersion":"0.83.39"}],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42572.json"},{"type":"ADVISORY","url":"https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-55gc-6fmc-fpx9"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42572"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:18.012120230Z"}}