Tóm tắt nhanh
- CVE-2026-61681 là lỗ hổng mức TRUNG BÌNH (CVSS 4.1) ảnh hưởng github.com/hatchet-dev/hatchet.
- Xác suất bị khai thác trong 30 ngày tới (EPSS): 0.31%, cao hơn 24.1% các lỗ hổng khác.
- Cách xử lý: cập nhật lên 0.91.1, 0.91.2 hoặc mới hơn.
Mô tả
Summary
The SNS UnsubscribeConfirmation handler in internal/integrations/ingestors/sns/sns.go makes an unvalidated
http.Get() call to payload.UnsubscribeURL without any URL restriction. Because UnsubscribeURL is intentionally
excluded from the BuildSignature() signed field list, an attacker can replace this field in a legitimately
AWS-signed message with an arbitrary internal URL, bypassing the VerifyPayload() signature check entirely and
triggering a Server-Side Request Forgery (SSRF) against internal infrastructure — including the EC2 Instance Metadata
Service (IMDS) at 169.254.169.254.
Impact
This is a Server-Side Request Forgery (SSRF) vulnerability. An attacker with a Hatchet account and an AWS Free Tier
account can:
- Reach the EC2 IMDS endpoint and retrieve IAM temporary credentials if Hatchet is deployed on AWS
- Port-scan and probe internal services not exposed to the internet
- Access internal HTTP APIs (e.g., Kubernetes API server, internal dashboards) from the Hatchet server's network
context
Mô tả của NVD
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.
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