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TI-2026-51742 Aliases CVE-2026-73658

Trigger.dev: Cross-tenant object store read and write via URL path traversal

Priority HIGH 71CWE-20Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-862.

Summary

Trigger.dev is a platform for building and deploying fully managed AI agents and workflows. From 4.4.2 until 4.5.0-rc.5, Aws4FetchClient.buildUrl() and Aws4FetchClient.presign() in apps/webapp/app/v3/objectStoreClient.server.ts assign user-controlled packet keys to URL.pathname, while apps/webapp/app/routes/api.v1.packets.$.ts accepts params["*"] without rejecting dot segments and uses findResource: async () => 1 without per-resource ownership validation. WHATWG path normalization collapses .. segments before signing, allowing a caller with a valid environment API key to obtain presigned URLs for another tenant's object-store keys and read or overwrite task payloads. This issue is fixed in version 4.5.0-rc.5.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00412 35th percentileScored 2026-11-07
Fix Fixed trigger.dev (triggerdotdev): 4.5.0-rc.5

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
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

VendorProductAffected versionsFixed inStatusSource
triggerdotdevtrigger.dev4.4.2 to before 4.5.0-rc.54.5.0-rc.5Patch availableCNA
  • trigger.dev Vendortriggerdotdev Affected 4.4.2 to before 4.5.0-rc.5 Fixed in 4.5.0-rc.5 Patch available CNA

Remediation

  • Fix · CNA trigger.dev (triggerdotdev) Fixed in 4.5.0-rc.5

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-73658

References

Other 4

  • TI-2026-78700 Hardcoded default secrets in Trigger.dev enable authentication bypass CVSS 4.0CRITICAL 9.2
  • TI-2026-78702 Cross-site request forgery in Trigger.dev CLI leads to token theft CVSS 4.0HIGH 8.7
  • TI-2026-78696 Trigger.dev Path Traversal in Packets Presigned URL Endpoints CVSS 4.0HIGH 8.6
  • TI-2026-78682 Improper authorization in Trigger.dev exposes root API key via envvars endpoint CVSS 4.0HIGH 8.6
  • TI-2026-78699 Trigger.dev realtime streams accept unauthenticated data injection CVSS 4.0MEDIUM 6.9
  • TI-2026-51743 Trigger.dev: Cross-tenant object read/write via path traversal in packet presign API CVSS 3.1HIGH 8.1
See all 36 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences