CVE-2026-73654Public exploitNetwork attack vector

Cross-tenant denial of service via prototype pollution

Published Aug 13, 2026 · Updated Aug 13, 2026

Prototype pollution in Trigger.dev 3.3.8 through 4.5.5 allows remote authenticated users to cause a process-wide service crash. The run-metadata PUT endpoint passes each attacker-controlled operation.key to JSONHeroPath.set without rejecting proto, constructor, or prototype path segments, allowing writes to Object.prototype. A normal environment API key and one crafted request are sufficient to corrupt shared Prisma queries and metrics state across tenants and trigger an uncaught exception.

CVSS severity8.5
High
EPSS probability0.33%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Prototype pollution in Trigger.dev 3.3.8 through 4.5.5 allows remote authenticated users to cause a process-wide service crash. The run-metadata PUT endpoint passes each attacker-controlled operation.key to JSONHeroPath.set without rejecting proto, constructor, or prototype path segments, allowing writes to Object.prototype. A normal environment API key and one crafted request are sufficient to corrupt shared Prisma queries and metrics state across tenants and trigger an uncaught exception.

The record

CVE
CVE-2026-73654
Published
Aug 13, 2026
Updated
Aug 13, 2026
Vendor
Trigger.dev
Product
Trigger.dev
Classifications
CWE-1321, T1499.004
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 13, 2026CVE publishedPublication date reported by the CVE source.
  2. Aug 13, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=>= 3.3.8, < 4.5.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Trigger.dev · Trigger.devversion=>= 3.3.8, < 4.5.6

Published CVSS scores

8.5GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:L/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-1321Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')
T1499.004Application or System Exploitation

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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