Answer in brief
CVE-2026-61681 records a Medium severity (CVSS 4.1) vulnerability in Hatchet: SSRF via Unsigned UnsubscribeURL in SNS UnsubscribeConfirmation Handler. The current sources do not mark it as known exploited. The current feed maps hatchet-dev/hatchet (generic), github.com/hatchet-dev/hatchet (go), github.com/hatchet-dev/hatchet (go), github.com/hatchet-dev/hatchet (go) and additional mapped packages. Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 4.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps hatchet-dev/hatchet (generic), github.com/hatchet-dev/hatchet (go), github.com/hatchet-dev/hatchet (go), github.com/hatchet-dev/hatchet (go) and additional mapped packages. Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| hatchet-dev/hatchetgeneric | <0.91.1 | 0.91.1 |
| github.com/hatchet-dev/hatchetgo | >=0 | Not reported |
| github.com/hatchet-dev/hatchetgo | <0.91.1 | 0.91.1 |
| github.com/hatchet-dev/hatchetgo | >=0 <0.91.1 | 0.91.1 |
| hatchet-dev/hatchetgo | <0.91.1 | 0.91.1 |
| hatchet-dev/hatchetgo | >=0 <0.91.1 | 0.91.1 |
Published upstream
Sep 21, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Nov 4, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Sep 21, 2026
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.
Quoted source text, attributed separately from HOL analysis.