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TI-2026-51741 Aliases CVE-2026-73657

Trigger.dev: Cross-tenant payload poisoning via packet write + replay

Priority LOW 19CWE-22Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-345.

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.4, `POST /api/v1/runs/:runParam/replay` in apps/webapp/app/routes/api.v1.runs.$runParam.replay.ts uses `prisma.taskRun.findUnique({ where: { friendlyId: runParam } })` without a runtimeEnvironmentId filter, then ReplayTaskRunService in apps/webapp/app/v3/services/replayTaskRun.server.ts replays the selected run in the victim environment. Any valid environment API key can therefore replay another tenant's run by friendlyId, consuming victim resources and repeating side effects; when `payloadType: "application/store"` is used, overrideExistingPayloadPacket() calls conditionallyImportPacket() on existingTaskRun.payload without an integrity check, so payload bytes overwritten through a separate object-store path-traversal vulnerability become attacker-controlled input to the victim task. This issue is fixed in version 4.5.0-rc.4.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00176 7th percentileScored 2026-11-07
Fix Fixed trigger.dev (triggerdotdev): 4.5.0-rc.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

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.44.5.0-rc.4Patch availableCNA
  • trigger.dev Vendortriggerdotdev Affected 4.4.2 to before 4.5.0-rc.4 Fixed in 4.5.0-rc.4 Patch available CNA

Remediation

  • Fix · CNA trigger.dev (triggerdotdev) Fixed in 4.5.0-rc.4

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-73657

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-2026-51742 Trigger.dev: Cross-tenant object store read and write via URL path traversal CVSS 3.1HIGH 8.2
  • TI-2026-78699 Trigger.dev realtime streams accept unauthenticated data injection CVSS 4.0MEDIUM 6.9
See all 36 →

Sources

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