Vulnerability Description
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.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/hatchet-dev/hatchet/commit/9555bfdd1e97f61d25e614ccaa107c5fb7
- https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-9q4h-f4x5-ffq8
FAQ
What is CVE-2026-84298?
CVE-2026-84298 is a vulnerability with a CVSS score of 3.1 (LOW). 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 i...
How severe is CVE-2026-84298?
CVE-2026-84298 has been rated LOW with a CVSS base score of 3.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-84298?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.