CVE-2026-88978CWE-639CWE-863broken-access-control

CVE-2026-88978

Medium · published September 21, 2026

CVSS v3.1
4.3
EPSS
0%
Percentile
19.5
In the wild
Unconfirmed
What it is

Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.106.1, the WorkerStatus gRPC polling path in pkg/repository/durable_events.go passes caller-supplied durable task, node, and branch identifiers to ListSatisfiedEntries without a tenant filter, allowing an authenticated tenant worker that knows another tenant's durable-task UUID to retrieve matching durable event-log records. The UUIDv4 requirement makes exploitation unlikely, and single-tenant deployments are unaffected in practice. This issue is fixed in version 0.106.1.

The record
Technical detail
CVSS v3.1
4.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CVSS v4.0
Not supplied
EPSS
0.00281 · 19.5th percentile
Weaknesses
CWE-639 · Authorization Bypass Through User-Controlled Key; CWE-863 · Incorrect Authorization
Published
2026-09-21T20:17Z
References (2)
https://github.com/hatchet-dev/hatchet/commit/15bc7923d3a8ebfeb0d88c19160dd24828921e85 · [email protected]https://github.com/hatchet-dev/hatchet/security/advisories/GHSA-992g-9cr3-vm5x · [email protected]
EPSS history
Timeline
  • 23 SEP 03:48Z
    EPSS moved — → 0%
    epss
  • 21 SEP 15:49Z
    Hatchet DurableTask WorkerStatus gRPC resolves caller-supplied durable-task UUIDs via ListSatisfiedEntries with no tenant_id filter
    cvelistv5