CVE-2026-73657 Trigger.dev: Cross-tenant payload poisoning via packet write + replay
Attackers can replay other tenants' tasks and inject malicious payloads due to missing authorization checks and integrity validation in the replay API.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-73657?
CVE-2026-73657 is a medium-severity missing authorization vulnerability in triggerdotdev trigger.dev, published on 13 Aug 2026. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
Trigger.dev is a platform for building and deploying fully managed AI agents and workflows. From 4.4.2 until 4.5.0-rc.4, `POST /api/v1/runs/:runParam/replay` in apps/webapp/app/routes/api.v1.runs.$runParam.replay.ts uses `prisma.taskRun.findUnique({ where: { friendlyId: runParam } })` without a runtimeEnvironmentId filter, then ReplayTaskRunService in apps/webapp/app/v3/services/replayTaskRun.server.ts replays the selected run in the victim environment. Any valid environment API key can therefore replay another tenant's run by friendlyId, consuming victim resources and repeating side effects; when `payloadType: "application/store"` is used, overrideExistingPayloadPacket() calls conditionallyImportPacket() on existingTaskRun.payload without an integrity check, so payload bytes overwritten through a separate object-store path-traversal vulnerability become attacker-controlled input to the victim task. This issue is fixed in version 4.5.0-rc.4.
Which versions are affected by CVE-2026-73657?
How do I fix CVE-2026-73657?
No fix has been published for CVE-2026-73657 yet. Limit exposure of the affected software until one is available.
Upgrade, and check permissions on every request on the server, not only in the interface. More about Missing authorization.
Is CVE-2026-73657 being exploited?
There is no known exploitation of CVE-2026-73657 in the wild and no public exploit code.
Sources
Also known as GHSA-jx48-qfwm-xq67.