Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-84298— Hatchet: Cross-tenant durable callback payload disclosure in Hatchet V1 Dispatcher

Quick assessment

Affected
hatchet-dev hatchet
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.95.3, the V1 DurableTask stream handler stores worker-supplied task_external_id values in the durableInvocations routing map before tenant ownership

CVSS 3.1 · Low EPSS 0.15% · P5

Affected Version Matrix 1

VendorProduct Version RangeStatus
hatchet-dev hatchet < 0.95.3 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-84298

Vulnerability Information

Shenlong is analyzing...

Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
Hatchet: Cross-tenant durable callback payload disclosure in Hatchet V1 Dispatcher
Source: CVE Program / CVE List V5
Vulnerability Description
Hatchet is a platform for orchestrating background tasks, AI agents, and durable workflows at scale. Prior to 0.95.3, the V1 DurableTask stream handler stores worker-supplied task_external_id values in the durableInvocations routing map before tenant ownership is verified, and callback delivery resolves that map by task UUID without tenant identity. An authenticated tenant worker that knows another tenant's durable task UUID and keeps a stream open on the same dispatcher process can receive that task's durable callback result payload. UUIDv4 values are not enumerable, and single-tenant deployments are unaffected in practice. This issue is fixed in version 0.95.3.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
通过用户控制密钥绕过授权机制
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
hatchet-dev hatchet < 0.95.3 -

II. Public POCs for CVE-2026-84298

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-84298

请登录查看更多情报信息。

Patches & Fixes for CVE-2026-84298 (1)

Other References for CVE-2026-84298 (1)

Same Patch Batch · hatchet-dev · 2026-09-21 · 5 CVEs total

CVE-2026-61687 7.1 HIGH hatchet - Unauthenticated OAuth state CSRF / login-CSRF via empty-state collision in Valid
CVE-2026-63342 6.3 MEDIUM Hatchet: Cross-Tenant Durable Task Event Log Disclosure via Missing Authorization Check
CVE-2026-88978 4.3 MEDIUM Hatchet DurableTask WorkerStatus gRPC resolves caller-supplied durable-task UUIDs via List
CVE-2026-61681 4.1 MEDIUM Hatchet: SSRF via Unsigned UnsubscribeURL in SNS UnsubscribeConfirmation Handler

IV. Related Vulnerabilities

Same product: hatchet
Same vendor: hatchet-dev
Same weakness: CWE-639

V. Comments for CVE-2026-84298

No comments yet

Leave a comment