High severity · published Aug 13, 2026
CVE-2026-73654
Trigger.dev: Prototype pollution via run metadata operations → process-wide cross-tenant DoS
8.5
CVSS
0.6%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
Low
Availability
High
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 49% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
TR
trigger.dev · triggerdotdev
>= 3.3.8, < 4.5.6 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-73654
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-73654
github.com
https://github.com/triggerdotdev/trigger.dev/commit/6997aeb05e27d2db47f9eda01fdc8a17c81a1ae0
github.com
https://github.com/triggerdotdev/trigger.dev/pull/4316
github.com
https://github.com/triggerdotdev/trigger.dev/releases/tag/v4.5.6
github.com
https://github.com/triggerdotdev/trigger.dev/security/advisories/GHSA-p28v-f755-9qrg
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