Trigger.dev: Prototype pollution via run metadata operations → process-wide cross-tenant DoS
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Trigger.dev is a platform for building and deploying fully managed AI agents and workflows. From 3.3.8 until 4.5.6, the PUT /api/v1/runs/:runId/metadata endpoint passes attacker-controlled operation.key values to new JSONHeroPath(operation.key).set(newMetadata, value) in packages/core/src/v3/runMetadata/operations.ts without rejecting dangerous constructor and prototype path segments. A caller with a normal environment API key can pollute Object.prototype in the shared webapp process, corrupting Prisma queries and Prometheus labels, breaking other tenants' worker authentication, and causing a process-wide denial of service. This issue is fixed in version 4.5.6.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- 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
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| triggerdotdev | trigger.dev | 3.3.8 to before 4.5.6 | 4.5.6 | Patch available | CNA |
| — | @trigger.dev/core (npm) | 3.3.8 to before 4.5.6 | 4.5.6 | Patch available | GHSA-p28v-f755-9qrg |
- trigger.dev Vendortriggerdotdev Affected 3.3.8 to before 4.5.6 Fixed in 4.5.6 Patch available CNA
- @trigger.dev/core (npm) Vendor— Affected 3.3.8 to before 4.5.6 Fixed in 4.5.6 Patch available GHSA-p28v-f755-9qrg
Remediation
- Fix · CNA trigger.dev (triggerdotdev) Fixed in 4.5.6
- Fix · GHSA-p28v-f755-9qrg @trigger.dev/core (npm) Fixed in 4.5.6 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2026-73654
- 2026-10-03 Alias added: GHSA-p28v-f755-9qrg
References
Other 5
- https://github.com/triggerdotdev/trigger.dev/security/advisories/GHSA-p28v-f755-9qrg
- https://github.com/triggerdotdev/trigger.dev/pull/4316
- https://github.com/triggerdotdev/trigger.dev/commit/6997aeb05e27d2db47f9eda01fdc8a17c81a1ae0
- https://github.com/triggerdotdev/trigger.dev/releases/tag/v4.5.6
- https://github.com/triggerdotdev/trigger.dev
More triggerdotdev vulnerabilities
- 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
Sources
- CVE-2026-73654 · CVE Program
- CVE-2026-73654 · NVD
- FIRST EPSS
- GHSA-p28v-f755-9qrg · GitHub Advisory Database · CC BY 4.0
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