CVE-2026-73656

CRITICAL 9.9

Trigger.dev: Cross-project deployment worker registration can modify another project's deployment state

CVSS Score

9.9

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-639 CWE-862
Vendor	triggerdotdev
Product	trigger.dev
Published	Aug 13, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

Low

Integrity

High

Availability

High

Affected Versions

triggerdotdev / trigger.dev

< 4.5.2

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/triggerdotdev/trigger.dev/security/advisories/GHSA-j6vv-pq9h-f4wj github.com: https://github.com/triggerdotdev/trigger.dev/pull/4199 github.com: https://github.com/triggerdotdev/trigger.dev/commit/34b1a181c2a1d33a53ebab88f84b05f81fea4254 github.com: https://github.com/triggerdotdev/trigger.dev/releases/tag/v4.5.2