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CVE-2026-61681

4.1 · MEDIUM

Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale.

Published Sep 21, 2026CWE-918EPSS 0.31%

Overview

CVE-2026-61681 is a medium-severity vulnerability. It was published on September 21, 2026 and has a CVSS 3.1 base score of 4.1 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 4.1, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/hatchet-dev/hatchet/commit/2d211bce16e5022afaf95780de82dc30e0bcba98GitHubgithub.com/hatchet-dev/hatchet/security/advisories/GHSA-fjwv-jf2v-j499

How CyberStrike helps

Frequently asked questions

What is CVE-2026-61681?

CVE-2026-61681 is a medium-severity vulnerability. It was published on September 21, 2026 and has a CVSS 3.1 base score of 4.1 (MEDIUM).

How severe is CVE-2026-61681?

This vulnerability has a CVSS 3.1 base score of 4.1, rated MEDIUM. It can be exploited remotely over the network. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2026-61681?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-61681?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-61681 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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