CVE-2026-61681: medium-severity vulnerability in hatchet-dev hatchet
Hatchet: SSRF via Unsigned UnsubscribeURL in SNS UnsubscribeConfirmation Handler
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.1epss 0.3%
Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.91.1, the SNS UnsubscribeConfirmation handler in internal/integrations/ingestors/sns/sns.go calls http.Get() on payload.UnsubscribeURL after VerifyPayload() even though BuildSignature() excludes UnsubscribeURL, allowing an authenticated Hatchet tenant to replace that field in an otherwise valid AWS-signed message with an internal URL. The server-side request can reach EC2 Instance Metadata Service, internal services, and internal HTTP APIs, potentially exposing IAM credentials or network-accessible data and functionality. This issue is fixed in version 0.91.1.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N
Affected products
hatchet-dev · hatchetRelated CVEs — hatchet-dev hatchet
In the same product, most dangerous first.
CVE-2026-54746MEDIUMHatchet: Cross-tenant write/DoS to other tenants' workers via Dispatcher gRPC UpsertWorkerLabels and UnsubscribeEPSS 0.4%CVE-2026-108755MEDIUMHatchet through 0.110.5 Unauthenticated Memory Exhaustion via SNS Ingestion EndpointEPSS 0.3%CVE-2026-63342MEDIUMHatchet: Cross-Tenant Durable Task Event Log Disclosure via Missing Authorization CheckEPSS 0.3%CVE-2026-88978MEDIUMHatchet DurableTask WorkerStatus gRPC resolves caller-supplied durable-task UUIDs via ListSatisfiedEntries with no tenant_id filterEPSS 0.3%CVE-2026-84298LOWHatchet: Cross-tenant durable callback payload disclosure in Hatchet V1 DispatcherEPSS 0.2%CVE-2026-42572MEDIUMHatchet: Cross-tenant information disclosure in `listTasksByDAGIds`EPSS 0.2%