CVE-2026-84298: Authorization Bypass Through User-Controlled Key

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 taskexternalid values in the durableInvocations routing map before tenant ownership is verified, and callback delivery...

PT-2026-96144

Name of the Vulnerable Software and Affected Versions Hatchet versions prior to 0.95.3 Description The V1 DurableTask stream handler stores worker-supplied task external id values in the durableInvocations routing map before verifying tenant ownership. Because callback delivery resolves this map...

CVE-2026-87858: Reliance on Untrusted Inputs in a Security Decision

Temporal Server decided whether a Workflow completion callback was internal by reading a caller-supplied HTTP header. An authenticated caller holding only write permission in a single namespace could attach a completion callback whose URL host matched the configured callback address allowlist,...