Trigger.dev before 4.5.2 Unauthorized Environment Access via Run Replay

CISA KEV is observed exploitation evidence. FIRST EPSS is a dated prediction of exploitation in the next 30 days. Missing scores are unknown. This collector requests predictions only for explicit CVE aliases in the public NuGet archive; Microsoft release views retain their existing prediction scope.

No collected risk observation for these identifiers. This does not establish absence of exploitation or a zero probability.

Trigger.dev versions before 4.5.2 fail to validate environment membership during run replay operations, allowing authenticated attackers to inject task runs into arbitrary environments. Attackers can replay their own runs into other organizations' or projects' environments to consume victim resources and pollute run history.

Source published

4 Sep 2026 14:32:17 UTC

Source modified

10 Sep 2026 15:08:30 UTC

Observed here

23 Oct 2026 15:48:27 UTC

Source terms

CVE Program Terms of Use

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CVSS 4.0 · 8.4 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L

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

Trigger.dev versions before 4.5.2 fail to validate environment membership during run replay operations, allowing authenticated attackers to inject task runs into arbitrary environments. Attackers can replay their own runs into other organizations' or projects' environments to consume victim resources and pollute run history.

Source published

Sep 4, 2026, 2:32:17 PM (timezone not stated)

Source modified

Sep 10, 2026, 3:08:30 PM (timezone not stated)

Observed here

11 Nov 2026 17:01:54 UTC

Source terms

ENISA EUVD · source terms and attribution apply

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: euvd · ENISA EUVD · source terms and attribution apply. Source text is retained; field grouping and change labels are provided by ChangeIntel.

EUVD CVSS 4.0 · 8.4 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L

Trigger.dev versions before 4.5.2 fail to validate environment membership during run replay operations, allowing authenticated attackers to inject task runs into arbitrary environments. Attackers can replay their own runs into other organizations' or projects' environments to consume victim resources and pollute run history.

Source published

4 Sep 2026 15:17:43 UTC

Source modified

23 Sep 2026 17:17:43 UTC

Observed here

25 Oct 2026 16:19:16 UTC

Source terms

NIST NVD usage terms; underlying source attribution retained

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 4.0 · [email protected] · Secondary · 8.4 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:L/SC:N/SI:H/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS 3.1 · [email protected] · Secondary · 8.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:L

### Summary The dashboard replay action authorizes the source run (it must belong to the caller's org), but the target environment for the replayed run is taken verbatim from the request body and is never checked for org or project membership. The environment lookup used by the replay path filters by id only. As a result, an authenticated user can replay one of their own runs into another organization's or project's environment, creating a task run there that consumes the victim tenant's queue and compute and pollutes their run history. ### Details The replay action member-scopes the source run correctly (apps/webapp/app/routes/resources.taskruns.$runParam.replay.ts, the findFirst on taskRun filtered by `project.organization.members.some.userId`), but passes the target environment straight from the submitted form, resources.taskruns.$runParam.replay.ts:344-346: ```js const replayRunService = new ReplayTaskRunService(); const newRun = await replayRunService.call(taskRun, { environmentId: submission.value.environment, // attacker-controlled, unvalidated payload: submission.value.payload, ... }); ``` `submission.value.environment` comes from ReplayRunData (apps/webapp/app/v3/replayTask.ts: `environment: z.string().optional()`), so it is fully client-controlled. ReplayTaskRunService resolves it with no ownership check, apps/webapp/app/v3/services/replayTaskRun.server.ts:26-28: ```js const authenticatedEnvironment = await findEnvironmentById( overrideOptions.environmentId ?? existingTaskRun.runtimeEnvironmentId ); ``` findEnvironmentById, apps/webapp/app/models/runtimeEnvironment.server.ts:197-211: ```js export async function findEnvironmentById(id) { const environment = await $replica.runtimeEnvironment.findFirst({ where: { id }, // no membership / org / project filter include: authIncludeWithParent, }); if (!environment || environment.project.deletedAt !== null) return null; return toAuthenticated(environment); } ``` The resolved environment is then handed to TriggerTaskService.call (apps/webapp/app/v3/services/triggerTask.server.ts), which trusts the passed authenticatedEnvironment and performs no further authorization. The replay loader does constrain the environment picker to the run's own project (replay.ts around 178-184), but the action does not re-impose that constraint, so the server-side control is missing (UI-gated only). ### PoC As an authenticated user who owns a run in their own org (run param runParam), and who knows a target environment id belonging to another org or project (a CUID, obtained or guessed): ```http POST /resources/taskruns/<own runParam>/replay Content-Type: application/x-www-form-urlencoded environment=<environment id of the victim org/project>&failedRedirect=/... ``` The replay resolves the victim environment with no membership check and calls TriggerTaskService against it, creating a run in the victim tenant. Live-validated: a Postgres database was seeded with two tenants (orgA with env_A, orgB with env_B_victim) and the verbatim findEnvironmentById lookup (findFirst joining the environment to its project, `WHERE id = $1`, the exact query the replay path runs) was executed with the victim env id as an orgA attacker. Captured: ``` [002 replay findEnvironmentById] attacker(orgA) supplied env_B_victim -> {"id":"env_B_victim","organization_id":"orgB","project_id":"proj_B","deleted_at":null} CROSS-TENANT: CONFIRMED (resolved another org's env with no membership check -> replay would run there) ``` The lookup returned another organization's environment with no membership filter. That the replay action passes the client-supplied environmentId straight into this lookup (and TriggerTaskService trusts the returned env) is verified at source. ### Impact An authenticated user can create task runs in another tenant's environment (including production), consuming that tenant's queue concurrency and compute and inserting entries into their run history. Practical exploitation requires knowing a target environment id (not enumerable) and, for the injected run to actually execute rather than error, a task identifier that exists in the target environment; this bounds reliability but not the unauthorized cross-tenant write itself. ### Remediation In the replay action (or in ReplayTaskRunService), require the resolved target environment to belong to the source run's project/organization, for example assert `environment.projectId === existingTaskRun.projectId`, or re-validate the supplied environment id against the caller's membership (findEnvironmentBySlug with the validated projectId, or a members.some.userId filter), mirroring the constraint the loader already applies to the picker.

Source published

2 Oct 2026 19:31:17 UTC

Source modified

2 Oct 2026 19:45:03 UTC

Observed here

24 Oct 2026 13:17:17 UTC

Source terms

GitHub Advisory Database · CC-BY-4.0

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This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: osv · GitHub Advisory Database · CC-BY-4.0. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS_V3 · CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L

Publisher rating · HIGH