CVE-2026-73656

CRITICAL CVSS 3.1: 9.9 EPSS 0.34%
Updated Sep 18, 2026
Triggerdotdev
Parameter Value
CVSS 9.9 (CRITICAL)
Fixed In 4.5.6
Type CWE-639 (Authorization Bypass), CWE-862 (Missing Authorization)
Vendor Triggerdotdev
Public PoC No

Trigger.dev is a platform for building and deploying fully managed AI agents and workflows. Prior to 4.5.6, POST /api/v1/deployments/:deploymentId/background-workers calls CreateDeploymentBackgroundWorkerServiceV4.call() in apps/webapp/app/v3/services/createDeploymentBackgroundWorkerV4.server.ts, where workerDeployment.findFirst() selects a deployment by friendlyId without an environmentId predicate. A caller with a valid API key for one project can submit another project's deployment identifier, link an attacker-owned background worker to the victim deployment, and move the victim deployment from BUILDING to DEPLOYING.

This issue is fixed in version 4.5.6.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
Low
Basic privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
Low
Partial data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products

triggerdotdev:trigger.dev