CVSS 3.1
4.1 mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:NCVE-2026-61681
Medium (4.1). EPSS 0.3% chance of exploitation in the next 30 days. Fixed in hatchet-dev/hatchet 0.91.1.
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.
Severity
- EPSS
- 0.3% chance of exploitation in the next 30 days; higher than 23% of CVEs (scores of 2026-10-31)
- CWE
- CWE-918
- Published
- Modified
- Record from
- the NVD, synced
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-fjwv-jf2v-j499 | Go | hatchet-dev/hatchet | <0.91.1 | 0.91.1 |
| GO-2026-6565 | Go | github.com/hatchet-dev/hatchet | <0.91.2 | 0.91.2 |