Missing authentication in Trigger.dev CLI MCP server exposes access token
Key facts
- Attack vector
- Adjacent network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.
Summary
Trigger.dev cli-v3 from 3.0.0 before 4.5.4 lacks authentication in the trigger dev --mcp server, which binds all network interfaces and exposes the /sse and /messages endpoints. LAN attackers or malicious web pages can invoke MCP tools that act with the developer's stored access token, CWE-306. The flaw requires no privileges or user interaction and affects confidentiality and integrity of the Trigger.dev account.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
Description from the CNA
Trigger.dev cli-v3 from 3.0.0 before 4.5.4 contains a missing authentication vulnerability in the trigger dev --mcp server, which binds all network interfaces and exposes the /sse and /messages endpoints. LAN attackers or malicious web pages can send MCP tools/call requests to invoke trigger-task, cancel-run, list-runs, and get-run-logs using the developer's stored access token.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| trigger.dev | cli-v3 | 3.0.0 to before 4.5.4 | 4.5.4 | Patch available | CNA |
- cli-v3 Vendortrigger.dev Affected 3.0.0 to before 4.5.4 Fixed in 4.5.4 Patch available CNA
Remediation
Update cli-v3 to version 4.5.4 or later. The sources list no fixed version for cli-v3 other than 4.5.4.
Written with Claude Haiku 5.5 from the sources below · 2026-10-28
- Fix · CNA cli-v3 (trigger.dev) Fixed in 4.5.4
Timeline
- 2026-10-21 Threatist record created from CVE-2026-114090
- 2026-10-21 CISA SSVC decision points changed
- 2026-10-21 Priority changed: MEDIUM → LOW
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences