{"cve":"CVE-2026-63342","nvd":{"published":"2026-09-21T16:17:10.737","modified":"2026-09-29T15:17:27.303","status":"Deferred","description":"Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.91.1, api-contracts/openapi/paths/v1/workflow-runs/workflow_run.yaml defines the GET /api/v1/stable/durable-tasks/{durable-task} endpoint implemented by listDurableEventLog without requiring the target tenant as a parent resource, allowing an authenticated user who obtains another tenant's durable task UUID to read that task's event log. Disclosed data can include task display names, workflow identifiers, user messages, wait conditions, branching logic, and timing information. This issue is fixed in version 0.91.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:N/A:N","score":6.3},"cwes":["CWE-863"],"references":["https://github.com/hatchet-dev/hatchet/commit/06c1fe43543e853ea98ecc2e6a575e2b8310bbeb","https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-g26x-m427-f48f"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:55:23.253742848+00:00"},"epss":{"cve":"CVE-2026-63342","score":0.00314,"percentile":0.2439,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-g26x-m427-f48f","url":"https://osv.dev/vulnerability/GHSA-g26x-m427-f48f","summary":"Hatchet: Cross-Tenant Durable Task Event Log Disclosure via Missing Authorization Check","modified":"2026-10-01T20:56:00.191196746Z","packages":[{"ecosystem":"Go","name":"github.com/hatchet-dev/hatchet","purl":"pkg:golang/github.com/hatchet-dev/hatchet","ranges":["<0.91.1"],"fixed":["0.91.1"]}]},{"id":"GO-2026-6567","url":"https://osv.dev/vulnerability/GO-2026-6567","summary":"Hatchet: Cross-Tenant Durable Task Event Log Disclosure via Missing Authorization Check in github.com/hatchet-dev/hatchet","modified":"2026-10-01T20:45:13.171855021Z","packages":[{"ecosystem":"Go","name":"github.com/hatchet-dev/hatchet","purl":"pkg:golang/github.com/hatchet-dev/hatchet","ranges":["<0.91.1"],"fixed":["0.91.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}