Trigger.dev: Unauthenticated Realtime Stream Data Injection via Run FriendlyId
Summary
The POST handler for /realtime/v1/streams/:runId/:streamId has no authentication. Any entity that knows or guesses a run friendlyId can inject arbitrary data into its realtime stream.
Vulnerability Details
File: apps/webapp/app/routes/realtime.v1.streams.$runId.$streamId.ts
The action handler (line 17) has no auth wrapper. The code comment says: "Plain action for backwards compatibility with older clients that don't send auth headers."
The run lookup at line 29 uses where: { friendlyId: runId } with NO environment scoping (runtimeEnvironmentId is not checked), so production runs are accessible.
Run friendlyIds follow predictable patterns (e.g., run_1234abcd).
Steps to Reproduce
# No authentication required
curl -X POST "http://localhost:8030/realtime/v1/streams/run_KNOWN_ID/stream_1" -H "Content-Type: application/json" -d '{"injected": "data"}'Impact
Unauthenticated data injection into any run realtime stream. Cross-environment access (no scoping).
Affected software
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| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| npm package | trigger.dev | < 4.5.5 | 4.5.5 |
References
- https://github.com/triggerdotdev/trigger.dev/security/advisories/GHSA-59h8-w5q6-mfmp
- https://github.com/triggerdotdev/trigger.dev/pull/4250
- https://github.com/triggerdotdev/trigger.dev/commit/73d966ad226548b5f96fb5b4fc6fa607a3b7b8f8
- https://github.com/triggerdotdev/trigger.dev
- https://github.com/triggerdotdev/trigger.dev/releases/tag/v4.5.5
- CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N- Weakness (CWE)
CWE-306- Platform
- npm
- Package
trigger.dev- Disclosed
- 02.10.2026
- Updated
- 21.10.2026 14:17
Sources and licenses
OSV / GitHub Advisory Database - GHSA-59h8-w5q6-mfmp - CC BY 4.0
Vulnerability history: trigger.dev
All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 10
- First → latest
- 10.2026 10.2026
- Without a fix
- 0
- Exploited in attacks
- 0
Severity breakdown
- Critical 1
- High 5
- Medium 4
Disclosures per year
- 2026: 10
-
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